AI Search
Tool | Category | Segment | Platform / Tool | Plan / License | Monthly Price USD | Pricing Model | Free Tier / OSS | Included Usage / Limits | Search Corpus / Index | Retrieval / Answer Features | Agent / API Controls | Integrations / Frameworks | Deployment / Hosting | Security / Privacy | Team / Governance | Best Fit | Main Limits / Caveats |
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No tagline | AI Search | Neural web search API | Exa | Commercial API | $0 free credits; usage based after | Per-request search/content pricing | Yes, free credits for new accounts | Official pricing lists separate search, contents and research endpoint charges | Exa neural web index with live crawling and selected vertical indexes | Semantic/neural search, similarity search, contents, highlights, answer and research endpoints | Date, domain, category, text, livecrawl, result-count and content controls | REST, Python/TypeScript SDKs, LangChain, LlamaIndex and MCP | Exa managed API | Queries and fetched content are processed by Exa; enterprise privacy terms are available | API keys, team billing, usage limits and enterprise options | Agents needing semantic discovery beyond keyword SERPs | Pricing rises with content extraction and research workflows; coverage differs from traditional engines |
No tagline | AI Search | Search and contents API | You.com APIs | Commercial API | Usage based / contact sales | Search and content endpoint usage | Trial access may be available; no durable free quota captured | Official API portal provides Search, Contents and Research APIs; public pricing requires current portal/account review | You.com web search infrastructure and live page content | Search results, snippets, full-page contents and research-style answer workflows | Query, country, language, freshness and result controls depending endpoint | REST API, Python examples and agent/tool integrations | You.com managed API | Queries and content are processed by You.com; enterprise privacy depends contract | API credentials and enterprise engagement | Products needing web search plus page contents from one provider | Public unit pricing is not consistently exposed without account context |
No tagline | AI Search | Search results API | SerpApi | Commercial API | $0 Free; Developer $75/month | Monthly search credits by plan | Yes, 250 searches/month | Pricing page lists Free with 250 searches and Developer at $75 for 5,000 searches | Google, Bing, Baidu, Yandex, YouTube, Amazon, maps, jobs and many vertical engines | Structured SERP JSON, location/language emulation, pagination and vertical result parsers | Engine-specific parameters, location, device, filters and async requests | REST, official/community libraries and common automation/agent stacks | SerpApi managed scraping/search infrastructure | Queries are proxied to search engines; compliance depends target engine and use case | Team plans, usage dashboard and enterprise SLA options | Developers needing normalized results from many established search engines | Primarily SERP extraction, not an AI-generated cited answer engine |
No tagline | AI Search | Independent web search API | Brave Search API | Commercial API | $0 Free; paid per 1,000 requests | Monthly request allocation and overage pricing | Yes, $5 monthly credits on Free plan | Pricing page lists Free with $5 in monthly credits and paid Search/Answers AI plans | Brave independent web index including web, news, images and videos | Web/news/image/video search, spellcheck, suggestions and AI-oriented result enrichment | Country, language, freshness, safesearch, result count and Goggles-style filtering | REST API, MCP server, SDK/community integrations and agent tools | Brave managed API | Queries are processed by Brave; API privacy and data-retention terms should be reviewed | Subscription keys, plan quotas and enterprise contact | Teams wanting an independent search index instead of Google/Bing resellers | Free credits are small; specialized endpoints and AI answers use separate plans |
No tagline | AI Search | Search results API | SearchApi.io | Commercial API | $0 trial; Starter $40/month | Monthly request plans | Yes, 100 free requests | Pricing page lists 100 free requests and Starter at $40 for 10,000 searches | Google, Bing, YouTube, Amazon, maps, jobs and other search verticals | Structured JSON SERPs, location/device emulation and multiple engine endpoints | Engine parameters, country, language, pagination, device and geolocation controls | REST API and SDK/examples for common languages | SearchApi.io managed infrastructure | Queries pass through provider; target-engine terms and data handling require review | Plan quotas, team usage and support tiers | Teams wanting a lower-cost normalized multi-engine SERP API | Not a semantic answer engine; advanced extraction can require follow-up crawling |
No tagline | AI Search | Agent search and research API | Linkup | Commercial API | Usage based | Per-request search and deep-research pricing | Trial credits may be available | Official docs expose standard search, deep search and sourced answer modes; current unit pricing is account/plan based | Live public web sources retrieved by Linkup | Standard/deep search, sourced answers and structured output for agents | Depth, output type, include/exclude domains and structured schema controls | REST, Python/TypeScript SDKs, LangChain, LlamaIndex and agent frameworks | Linkup managed API | Queries and sources are processed by Linkup; enterprise controls depend plan | Workspace keys, usage controls and enterprise options | Agents needing sourced research with structured results | Smaller ecosystem than major search APIs; pricing visibility depends current account portal |
No tagline | AI Search | Grounded answer API | Perplexity Sonar | Commercial API | Usage based | Token plus search-context request fees | No permanent free tier documented | Pricing varies by Sonar model; token charges and search-context request fees apply | Live web sources selected by Perplexity search infrastructure | LLM answers with citations, search context and model variants for deeper reasoning | OpenAI-compatible chat API, search-domain filters, recency and return-citation controls | OpenAI SDKs, REST, agent frameworks and OpenAI-compatible clients | Perplexity managed API | Web queries and prompts are sent to Perplexity; enterprise controls depend agreement | API usage controls and enterprise plans | Applications needing cited current answers rather than raw SERP results | More expensive and less deterministic than raw search; citations still require application-level validation |
No tagline | AI Search | Agent web search API | Tavily | Commercial API | $0 free; pay-as-you-go and paid plans | Credit-based requests and extraction | Yes, 1,000 free credits/month | Official docs list a free Researcher plan with 1,000 credits monthly and paid/project plans | Real-time web search plus page extraction and crawl results | Search, extract, crawl, map and research endpoints optimized for LLM agents | Topic, depth, domains, country, time range, chunks and answer-generation controls | LangChain, LlamaIndex, CrewAI, AutoGen, MCP and REST/Python/JS SDKs | Tavily managed API | Queries and crawled content pass through Tavily; enterprise options include additional controls | Project keys, usage dashboard, rate limits and enterprise plan | Agent builders who want search and extraction in one API | Credit cost varies by endpoint/depth; not a general consumer search UI |
No tagline | AI Search | Web search API | Perplexity Search API | Commercial API | Usage based | $5 per 1,000 requests plus token charges for content | No permanent free tier documented | Official pricing lists Search API requests at $5 per 1,000; returned content tokens are billed separately | Perplexity web index and real-time web search results | Ranked web results with titles, URLs, snippets, freshness and optional extracted content | Search filters, recency, domains, location and result-count controls through API | REST API, Python/TypeScript SDKs and agent frameworks using HTTP tools | Perplexity managed API | Queries and returned content are processed by Perplexity; enterprise terms should be reviewed | API keys, usage dashboard and enterprise engagement | Agents that need raw current web results without generating a full answer | Costs combine request and content-token billing; not a self-hosted index |
No tagline | AI Search | Premium search API | Kagi Search API | Commercial API | Usage based | Per-search API credits tied to Kagi account | No general free production tier | Official API docs state API access requires a Kagi account and uses API credits/current account pricing | Kagi metasearch/ranking index with privacy-focused result processing | Ranked web results with Kagi quality signals and optional summarization through separate products | Query, limit and result metadata controls through REST | REST API and community agent integrations | Kagi managed API | Kagi positions search as privacy-focused; API data terms should still be reviewed | Account token and usage/billing controls | Privacy-conscious applications that value Kagi ranking | Smaller API ecosystem and no broad free tier; pricing is tied to Kagi account credits |
No tagline | AI Search | Cloud search service | Azure AI Search | Microsoft Azure managed service | $0 Free; paid tiers vary by region | Hourly search units plus optional AI enrichment costs | Yes, Free tier | Official pricing provides a limited Free service and paid Basic/Standard/Storage-Optimized tiers | Customer documents, databases, Blob Storage, Cosmos DB, SQL and custom indexes | Full-text, vector, hybrid and semantic ranking with AI enrichment and integrated vectorization | Index schemas, filters, facets, scoring profiles, semantic configs and REST/SDK APIs | Azure OpenAI, Blob Storage, Cosmos DB, SQL, SharePoint connectors and Azure SDKs | Azure managed regional service | Azure IAM, private endpoints, encryption and compliance controls by tier/configuration | Subscriptions, RBAC, quotas, replicas/partitions and enterprise governance | Azure teams building hybrid/vector search over private business data | Free tier is small; semantic ranker, skillsets and upstream AI services add cost |
No tagline | AI Search | SERP data API | DataForSEO SERP API | Commercial API | Usage based with minimum account deposit | Per-task pricing by priority and endpoint | Sandbox available; no permanent production free tier | Official pricing calculator uses per-task rates, starting from low fractions of a dollar depending endpoint and priority | Google, Bing, Yahoo, Baidu, YouTube, maps, shopping and other SERP sources | Structured organic/paid/local results, live/standard tasks and historical/keyword data products | Location, language, device, depth, priority and task batching controls | REST, client libraries, SEO platforms and data pipelines | DataForSEO managed API | Search requests and results are processed by provider; compliance depends downstream use | Team accounts, API limits, billing dashboard and enterprise support | High-volume SEO/search intelligence pipelines | Complex product catalog and asynchronous task model are heavier than agent-first APIs |
No tagline | AI Search | Open-source search platform | Meilisearch | MIT / managed cloud | $0 self-hosted; Cloud starts at $30/month | Open-source self-hosting or usage-based Cloud plans | Yes, MIT open source | Official pricing lists Cloud Build starting at $30/month and Enterprise custom | Customer application, product, documentation and content indexes | Typo-tolerant full-text, vector/AI-powered search, hybrid search, filters and facets | REST API, ranking rules, synonyms, filters, tenant tokens and embeddings configuration | SDKs, ecommerce/CMS integrations, OpenAI/Hugging Face embeddings and deployment platforms | Self-hosted binary/Docker/Kubernetes or Meilisearch Cloud | Self-hosting offers local control; enterprise cloud adds compliance and private connectivity options | API keys, tenant tokens, projects and enterprise support | Teams seeking an easy developer-first open-source alternative to hosted search | Cloud usage and vector indexing add cost; public-web discovery is outside scope |
No tagline | AI Search | Enterprise relevance platform | Coveo | Commercial SaaS | Custom pricing | Enterprise subscription and usage | Trial/demo may be available; no durable free tier captured | Official pricing is sales-led and varies by commerce, service and workplace use case | Enterprise websites, ecommerce catalogs, support content and workplace sources | Semantic search, recommendations, generative answering, personalization and relevance analytics | Query pipelines, ranking expressions, facets, ML models, APIs and connector controls | Salesforce, ServiceNow, Adobe, SAP, ecommerce platforms and enterprise content sources | Coveo managed SaaS | Enterprise security, access controls and source permissions depend deployment | Organizations, roles, analytics, ML models and enterprise governance | Enterprises needing search relevance and personalization across customer journeys | Complex implementation and custom pricing are unsuitable for small projects |
No tagline | AI Search | Open-source hybrid personal search | MemFree | Open source | $0 software; model/search/hosting costs separate | Self-hosted hybrid AI search engine | ✓ | Repository describes hybrid search across internet, bookmarks, notes and documents with one-click deployment | Public web plus user bookmarks, notes and uploaded/private documents | Hybrid personal search, cited answers, document retrieval and knowledge organization | Configurable models, search providers, document ingestion and deployment settings | LLM APIs, web search, databases and one-click hosting templates | Self-hosted/local or cloud deployment | Private corpus can remain in controlled deployment; web/model providers still receive relevant queries | No broad enterprise governance in OSS project | Individuals building a unified personal web and knowledge search engine | Project maturity and operating dependencies require review before production use |
No tagline | AI Search | Open-source answer engine | Perplexica | MIT / open source | $0 software; model/search/hosting costs separate | Self-hosted AI search engine | ✓ | Repository describes a self-hosted AI-powered search engine inspired by Perplexity | Web results through configured metasearch/search backends plus optional local knowledge sources | Cited conversational answers, multiple focus modes, image/video search and local model support | Configurable LLMs, embeddings, search backend and API/web application settings | Ollama, OpenAI-compatible models, SearXNG, Docker and web deployment | Docker/self-hosted local or private server | Can keep model inference local with Ollama; search requests still go to configured backend | No native enterprise governance; deployment auth must be added/configured | Users wanting a private Perplexity-like answer engine | Requires maintaining search and model backends; answer quality follows selected providers |
No tagline | AI Search | Open-source AI search app | MiniPerplx | Open source | $0 software; provider/search hosting costs separate | Self-hosted Perplexity-style application | ✓ | Local seed describes MiniPerplx as a minimal AI-powered internet search engine | Public web sources through configured search/provider APIs | Conversational search UI, cited answers and lightweight research workflow | Provider keys, web search tools and application configuration | Next.js/Vercel-style stack, LLM APIs and search providers depending project version | Self-hosted or Vercel deployment | Data flow depends configured model/search providers | No enterprise governance by default | Developers learning how to assemble a cited AI search application | Reference app rather than a managed search API; maintenance and provider compatibility vary |
No tagline | AI Search | Hosted search platform | Algolia | Commercial SaaS | $0 Build; Grow pay-as-you-go | Search requests and records/usage pricing | Yes, Build plan | Pricing page lists a free Build plan and usage-based Grow/Premium/Elevate options | Customer product, content, documentation and application indexes | Typo-tolerant keyword search, neural/hybrid search, recommendations, personalization and AI features | Ranking rules, facets, filters, synonyms, query suggestions and APIs | Web/mobile SDKs, ecommerce platforms, CMS integrations and AI application stacks | Algolia managed global SaaS | Enterprise security, regional options and compliance depend plan | Apps, API keys, roles, analytics and enterprise governance | Product and content search requiring very low-latency hosted UX | Record/request costs can scale quickly; not a general public-web search index |
No tagline | AI Search | Open-source distributed search | OpenSearch | Apache-2.0 / open source | $0 software; infrastructure costs separate | Self-hosted software or managed cloud services | ✓ | OpenSearch software is Apache-2.0; managed offerings such as Amazon OpenSearch Service are billed separately | Customer logs, documents, vectors, product data and enterprise indexes | Full-text, vector, neural, hybrid search, semantic highlighting and search pipelines | Query DSL, ingest/search pipelines, plugins, filters, aggregations and REST APIs | AWS OpenSearch Service, Kubernetes, observability tools, ML Commons and AI frameworks | Self-hosted clusters or managed provider services | Security plugin supports auth, TLS, roles and audit; deployment hardening is operator responsibility | Multi-tenancy, roles, dashboards and managed-service governance | Organizations needing an Apache-licensed distributed search and vector stack | Cluster operations are complex; managed services add infrastructure costs |
No tagline | AI Search | Search and relevance platform | Elastic | Commercial cloud plus source-available software | Usage based / free trial | Cloud capacity/storage/compute usage | Free trial; self-managed basic features available | Official pricing offers Serverless and hosted Elastic Cloud usage models plus self-managed distributions | Customer logs, documents, product catalogs, knowledge bases and vector indexes | Full-text, vector, hybrid, semantic reranking, ELSER and relevance tooling | Query DSL, filters, aggregations, ingest pipelines, inference endpoints and REST clients | Kibana, OpenTelemetry, cloud connectors, LangChain, LlamaIndex and enterprise data sources | Elastic Cloud or self-managed clusters | Encryption, RBAC, audit and private networking depend tier/deployment | Spaces, roles, API keys and enterprise support | Teams combining search, observability and vector retrieval in one stack | Operational complexity and cloud consumption pricing are higher than turnkey search APIs |
No tagline | AI Search | Enterprise workplace search | Glean | Commercial SaaS | Custom pricing | Per-user/enterprise contract | No public free tier captured | Official site is sales-led; public unit pricing is not listed | Connected workplace apps, documents, messages, people and enterprise knowledge | Permission-aware semantic search, answers, assistant and agent/workplace knowledge features | Connectors, identity permissions, governance controls and enterprise APIs | Google Workspace, Microsoft 365, Slack, Jira, Confluence, Salesforce and many enterprise systems | Glean managed enterprise SaaS | Permission-aware indexing, enterprise security certifications and admin controls | Admin console, identity integration, analytics and governance | Large organizations searching across many internal SaaS systems | Custom pricing and connector rollout require enterprise implementation |
No tagline | AI Search | Enterprise grounded search | Google Vertex AI Search | Google Cloud managed service | Usage based | Per-query and data-indexing/storage pricing | New Google Cloud accounts may receive general cloud credits | Official pricing is based on search queries and indexed data, with separate advanced/generative features | Customer websites, documents, structured data and Google Cloud-connected enterprise corpora | Semantic search, grounded answers, conversational search, recommendations and website search | Data-store schemas, filters, facets, serving configs, grounding and API controls | Google Cloud, Gemini/Vertex AI, BigQuery, Cloud Storage and Document AI | Google Cloud managed regional service | Google Cloud IAM, encryption, audit logs and enterprise data controls | Projects, IAM, quotas and organization policies | Enterprises building search and grounded generation over private corpora | Pricing and quotas are product/region dependent; setup is heavier than a web search API |
No tagline | AI Search | Open-source search platform | Typesense | GPL-3.0 / managed cloud | $0 self-hosted; Cloud starts around $20/month | Self-hosted software or cluster-hour cloud pricing | Yes, open source | Official Cloud pricing is based on selected RAM/CPU/storage configuration; small clusters start in the low tens monthly | Customer product/content/document indexes and vector embeddings | Typo-tolerant instant search, semantic/vector search, hybrid ranking, facets and conversational search | REST APIs, filters, facets, curation, synonyms, multi-search and scoped keys | JavaScript/mobile SDKs, ecommerce/CMS examples, embedding providers and AI frameworks | Self-hosted Docker/Kubernetes or Typesense Cloud | Self-hosting keeps data controlled; Cloud offers managed security features | API keys, scoped keys, collections and cloud team controls | Developers wanting simpler open-source search with strong typo tolerance | GPL licensing and operational responsibility matter for self-hosting; not public-web search |
No tagline | AI Search | Large-scale search and serving engine | Vespa | Apache-2.0 / Vespa Cloud | $0 self-hosted; Cloud usage/custom | Open-source engine or managed resource consumption | Yes, open source | Official project is Apache-2.0; Vespa Cloud pricing depends deployed resources and support model | Customer text, vector, recommendation and structured application data | Hybrid retrieval, nearest neighbor, learned ranking, tensors and real-time serving | Schema/ranking profiles, query language, grouping, streaming updates and inference controls | PyVespa, Java components, Hugging Face models, LLM/RAG stacks and cloud data pipelines | Self-hosted clusters or Vespa Cloud | Self-hosted control; cloud security and private connectivity depend agreement | Applications, tenants, deployments and enterprise support | High-scale search/recommendation teams needing custom ranking and serving | Steep learning curve and engineering overhead compared with hosted search SaaS |
No tagline | AI Search | Open-source agentic web search | MindSearch | Apache-2.0 / open source | $0 software; model/search/hosting costs separate | Self-hosted multi-agent search framework | ✓ | Repository presents a multi-agent web search engine comparable to Perplexity-style research | Public web results obtained through configured search engines and browser tools | Search planning, multi-agent retrieval, graph-style reasoning and cited answer generation | Configurable LLMs, search backends, agent roles and deployment examples | InternLM, OpenAI-compatible models, search APIs, Gradio and local/cloud inference | Local/self-hosted Python web application | Privacy depends selected LLM and search backends; self-hosting controls application data | No native enterprise governance; operator-managed deployment | Researchers experimenting with multi-agent search planning | Requires external model/search infrastructure and production hardening |