The 15 Best API Tools in 2026 (Compared)

1. Context.dev — best for AI agents that need fresh web content grounded in RAG systems

Pricing: Free plan; paid from $19/month · Free plan: Yes · Upvotes: 869

In Context.dev's words

Context.dev is the web context API for AI products and agents. Scrape any URL, crawl sites, turn pages into LLM-ready Markdown, extract structured data into your own schema, capture screenshots, and retrieve logos, colors, fonts, styleguides, company data, and transaction enrichment through one API. YC-backed, no card required, and built so developers or coding agents can integrate in minutes.

Key features

• Scrape any URL into Markdown, HTML, images, or structured fields
• Crawl entire websites and run batch jobs on thousands of URLs
• Retrieve company profiles and website design system data
• Answer research questions with structured data and source URLs
• Map domain URLs with titles and descriptions

Use cases

• AI agents that need fresh web content grounded in RAG systems
• Product onboarding forms that auto-fill company information
• AI chatbot platforms building knowledge bases from websites

Pricing details: Free tier with 1,000 credits per month. Developer plan $19/month with 7,500 credits. Pro $99/month with 125,000 credits. Growth, Scale, and Enterprise plans available at higher volumes.

See Context.dev pricing, reviews and alternatives →

2. Plurai — best for teams building AI agents who need to reduce failure rates and deployment costs

Pricing: Free plan; paid from $0.15 · Free plan: Yes · Upvotes: 700

In Plurai's words

Vibe training for AI agent reliability. Describe what your agent should and should not do — Plurai generates training data, validates it, and deploys a custom model in minutes. It feels like vibe coding, but for evaluation and guardrails. No labeled data. No annotation pipeline. No prompt engineering. Under the hood, small language models deliver sub 100ms latency, 8x lower cost than GPT as judge, and over 43% fewer failures. Always on, not sampled. Built on published research (BARRED).

Key features

• Build real-time evals and guardrails for AI agents
• Generate training data without manual labeling or annotation
• Deploy custom evaluation models in minutes
• Evaluate semantic tasks including conversation and policy compliance
• Run models with sub-100 millisecond response latency

Use cases

• Teams building AI agents who need to reduce failure rates and deployment costs
• Developers running large-scale production testing requiring continuous validation coverage

Pricing details: Free plan includes 1M tokens. Pay-as-you-go SLM pricing at $0.15 per 1M tokens. Optimized LLM at $0.3 per 1M tokens. Enterprise plans available with on-prem deployment and custom pricing.

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3. Notte — best for E-commerce teams automating checkout, invoice fetching, and subscription cancellation

Pricing: See website · Upvotes: 574

In Notte's words

Many websites don't have public APIs. Anything API fills that gap. Turn any browser work into a production-ready API. Describe the task, and our agents build a custom function that calls the site directly. Ship a custom API endpoint you can deploy serverless, schedule on Cron, or call via API. Tell Notte what you need. We ship the function endpoint.

Key features

• Launch thousands of concurrent browser instances around the globe
• Run AI agents that complete web tasks with over 90% success rate
• Deploy serverless browser functions colocated with browsers
• Save and reuse full browser state across sessions
• Store encrypted credentials and manage agent authentication

Use cases

• E-commerce teams automating checkout, invoice fetching, and subscription cancellation
• AI teams building agents that navigate complex websites without selectors
• Developers needing custom API endpoints for any website without public APIs

See Notte pricing, reviews and alternatives →

4. Humalike — best for create AI NPCs that talk and remember players across gaming sessions

Pricing: Free plan; paid from $0.002 · Free plan: Yes · Upvotes: 523

In Humalike's words

One command gives your Hermes agent social intelligence. It decides when to speak, adapts to your group's tone and remembers who said what. Works in group chats on Slack, Telegram and WhatsApp.

Key features

• Manage turn-taking in conversations
• Act proactively without being asked
• Understand social dynamics and group norms
• Maintain memory of individual people
• React to real-time events

Use cases

• Create AI NPCs that talk and remember players across gaming sessions
• Build AI companions that sense mood and know when to engage
• Deploy humanoids and smart devices that read the room and respond appropriately

Pricing details: Free plan with 10,000 interactions per month.

See Humalike pricing, reviews and alternatives →

5. Claude Opus 4.7 — best for software engineers who need to automate complex multi-step coding workflows and reduce development friction

Pricing: From $5 · Free plan: No · Upvotes: 506

In Claude Opus 4.7's words

Claude Opus 4.7 is Anthropic's most advanced generally available AI model for complex reasoning and software engineering tasks. It helps developers hand off difficult coding work with confidence, handling complex long-running tasks with precision and consistency. The model improves vision capabilities and produces higher-quality professional outputs like interfaces, slides, and documents.

Key features

• Handle complex, long-running tasks with rigor and consistency.
• Pay precise attention to instructions and follow them strictly.
• Verify outputs before reporting results to ensure accuracy.
• Process images in greater resolution for improved vision understanding.

Use cases

• Software engineers who need to automate complex multi-step coding workflows and reduce development friction.
• Financial technology platforms seeking faster development velocity and reliable coding assistance at scale.
• Life sciences researchers analyzing chemical structures and technical diagrams for patent workflows.

Pricing details: Pricing is $5 per million input tokens and $25 per million output tokens.

See Claude Opus 4.7 pricing, reviews and alternatives →

6. Zro — best for developers who want to run coding agents with privacy guarantees and zero data retention

Pricing: Free plan; paid from $5 · Free plan: Yes · Upvotes: 505

In Zro's words

Zro is a private inference endpoint for coding agents that serves open-weight coding models across multiple regions. It provides fast inference with zero request retention and no training on customer data. Zro supports integrations with popular coding tools like Claude Code, Cursor, and Cline through its CLI launcher.

Key features

• Serve open-weight coding models across multiple regions
• Support OpenAI-compatible and Anthropic-compatible API access
• Integrate with coding tools using the Zro CLI launcher
• Never retain prompts or use data for model training
• Optimize performance for long-context multi-turn coding sessions

Use cases

• Developers who want to run coding agents with privacy guarantees and zero data retention.
• Teams needing responsive inference for production coding applications without speed-privacy tradeoffs.

Pricing details: Plans start at $20/month with $60 expected monthly inference spend.

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7. Gemini — best for developers building and scaling generative AI applications across different platforms

Pricing: Free plan + paid tiers · Free plan: Yes · Upvotes: 500

In Gemini's words

Gemini is Google's most capable AI model, built to understand and process multiple types of information including text, code, audio, images, and video. It comes in three optimized sizes—Ultra for complex tasks, Pro for scaling across tasks, and Nano for on-device efficiency.

Key features

• Process text, code, audio, images and video
• Run efficiently on data centers and mobile devices
• Solve complex problems with advanced reasoning

Use cases

• Developers building and scaling generative AI applications across different platforms.
• Enterprise customers tackling highly complex tasks requiring state-of-the-art capabilities.

See Gemini pricing, reviews and alternatives →

8. Bruno — best for support teams who need easy-to-use variable configuration without JSON formatting errors

Pricing: Free · Free plan: Yes · Upvotes: 461

In Bruno's words

Bruno is an open-source API client that supports REST, GraphQL, gRPC and Websocket protocols. It stores API collections as plain-text files in your repository, eliminating cloud syncing and enabling Git-based collaboration.

Key features

• Store API collections as plain-text files in Git repositories
• Run multiple API requests in batch from folders
• Define pre-request variables for configuration and reuse
• Open API collections in multiple tabs simultaneously

Use cases

• Support teams who need easy-to-use variable configuration without JSON formatting errors
• Teams using AI code generators who need generated API requests stored in their repository

Pricing details: Bruno is free and open-source with no per-user licensing fees.

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9. Tabstack by Mozilla — best for competitive intelligence teams tracking competitor pricing and positioning

Pricing: Free plan; paid from $10/month · Free plan: Yes · Upvotes: 446

In Tabstack by Mozilla's words

Give /automate a task in plain English and it drives a real browser to do it: navigate a site, click through a multi-step flow, fill a form, reach a page that only renders after interaction. The result streams back in one API call. It's an API you call, not a framework you install. Browser and LLM included, nothing to host, no concurrency ceiling. Accessibility-tree automation spends 60 to 80% fewer tokens than screenshot-based agents. Built by Mozilla. Ephemeral, no training on your data.

Key features

• Extract structured data from any URL matching a schema
• Run web research with cited answers in a single API call
• Automate browser tasks without managing infrastructure
• Generate clean Markdown from any URL
• Access live web data with inline citations on every claim

Use cases

• Competitive intelligence teams tracking competitor pricing and positioning
• Sales teams enriching leads with headcount, tech stack and funding data
• Product teams automating multi-step bookings and checkout flows

Pricing details: Free trial with 10,000 credits. Starter plan $10/month with 100,000 credits. Team plan $99/month with 500,000 credits. Pro plan $499/month with 3,000,000 credits.

See Tabstack by Mozilla pricing, reviews and alternatives →

10. Swytchcode — best for teams automating customer onboarding workflows across CRM, billing, and email systems

Pricing: Free plan; paid from $29/month · Free plan: Yes · Upvotes: 437

In Swytchcode's words

Swytchcode is a runtime that enables AI agents to reliably call legacy APIs and SaaS services in production. It provides agents with implementation knowledge that vendors never documented, then governs every action the agent runs. It solves the problem that legacy APIs were not designed to work with AI agents.

Key features

• Validate API calls against schemas before execution
• Handle authentication, retries, and idempotency automatically
• Enforce policies and approval workflows on API actions
• Provide audit logs of all API calls and outcomes
• Execute CLI commands with validation overhead under 50ms

Use cases

• Teams automating customer onboarding workflows across CRM, billing, and email systems.
• Fintech companies running KYC checks and policy validation before payment transfers.
• Engineering teams automating bug escalation across GitHub, Jira, and Slack.

Pricing details: Free plan with 10,000 monthly commands. Pro is $29/month or $290/year. Business is $149/month or $1,490/year. Enterprise offers custom deployment.

See Swytchcode pricing, reviews and alternatives →

11. ZenMux — best for AI coding applications requiring long-context handling and multi-model support

Pricing: Free plan + paid tiers · Free plan: Yes · Upvotes: 421

In ZenMux's words

ZenMux is an enterprise-grade LLM gateway providing unified API access to over 100 AI models from multiple providers. It helps developers avoid juggling multiple accounts and APIs by offering single-account access to all leading AI models. ZenMux compensates users automatically when AI models produce subpar outputs or performance issues.

Key features

• Route requests automatically to optimal models based on cost and quality
• Automatically failover between multiple providers during outages
• Track every token and cost across detailed dashboards
• Reduce latency through global edge network acceleration
• Compensate users and analyze failures to improve models

Use cases

• AI coding applications requiring long-context handling and multi-model support

Pricing details: Pay-as-you-go pricing with 5% discount on service fees for top-ups.

See ZenMux pricing, reviews and alternatives →

12. MaxClaw by MiniMax — best for developers building AI-native workflows and applications

Pricing: Free plan + paid tiers · Free plan: Yes · Upvotes: 376

In MaxClaw by MiniMax's words

MiniMax M2.7 is a self-evolving AI model that helped build its own capabilities. It can create agent harnesses, collaborate via Agent Teams, and handle complex tasks like coding, debugging, and research. With strong SWE-Pro performance and reduced intervention time, it moves beyond static AI into systems that continuously learn, adapt, and execute complex work with minimal human input. Available via API and MiniMax Agent for builders pushing AI-native workflows.

Key features

• Create agent harnesses for automated workflows
• Collaborate via Agent Teams on shared tasks
• Handle complex tasks like coding and debugging
• Continuously learn and adapt to new situations

Use cases

• Developers building AI-native workflows and applications
• Teams handling complex research and analysis tasks

See MaxClaw by MiniMax pricing, reviews and alternatives →

13. Lightning Rod: AI Forecasting API — best for developers building prediction-market bots that price contracts against calibrated probabilities

Pricing: From $6 · Free plan: No · Upvotes: 327

In Lightning Rod: AI Forecasting API's words

Foresight by Lightning Rod is an OpenAI-compatible forecasting API for developers building agents, prediction-market bots, and decision tools. Ask a question about a future event and get a scored, calibrated forecast back. Unlike general-purpose LLMs, Foresight is trained and evaluated on real-world outcomes, with benchmark-verified accuracy, cheaper inference, and a drop-in API for forecasting workflows.

Key features

• Return calibrated probability estimates for forecasting questions
• Auto-gather relevant context to inform predictions
• Learn from real-world outcomes instead of generic text patterns
• Provide cheaper inference than general-purpose frontier models
• Integrate with existing OpenAI-compatible production workflows

Use cases

• Developers building prediction-market bots that price contracts against calibrated probabilities
• Risk analysts assessing probabilities on supply-chain shocks and policy actions
• AI agents that need a forecasting tool to predict future events

Pricing details: Foresight costs $6 per 1 million output tokens.

See Lightning Rod: AI Forecasting API pricing, reviews and alternatives →

14. ElevenLabs — best for audiobook and podcast creators who want expressive narration voices

Pricing: Free plan + paid tiers · Free plan: Yes · Upvotes: 292

In ElevenLabs's words

ElevenLabs is an AI voice generator and voice agents platform that creates lifelike speech. It provides access to thousands of voices across many languages with APIs and SDKs for developers. The platform helps creators, developers, and enterprises build audio and conversational AI products.

Key features

• Generate expressive speech in 70+ languages
• Clone voices or design custom voices from prompts
• Generate studio-quality music in any genre or style
• Create or edit images and turn ideas into videos
• Deploy conversational agents across voice and chat channels

Use cases

• Audiobook and podcast creators who want expressive narration voices
• Customer support teams who want to deploy multilingual voice agents

See ElevenLabs pricing, reviews and alternatives →

15. OpenAI — best for use OpenAI's API to integrate GPT-5.4 into your product for coding assistance, reasoning tasks, and agentic workflows at scale

Pricing: Free plan + paid tiers · Free plan: Yes · Upvotes: 280

In OpenAI's words

GPT-5.4 brings powerful reasoning, coding, and agentic workflows into one frontier model, now live in ChatGPT, API, and Codex. With GPT-5.4 mini (2x faster) and nano (lowest cost), build responsive AI systems for coding, subagents, and multimodal tasks. Featuring computer use, web search, and massive context, it’s designed for real-world, high-scale execution.

Key features

• Interact with the system while it completes tasks
• Deliver results 25% faster than previous versions
• Provide high-level cybersecurity capabilities

Use cases

• Use OpenAI's API to integrate GPT-5.4 into your product for coding assistance, reasoning tasks, and agentic workflows at scale
• Build responsive AI systems with GPT-5.4 mini for faster response times or GPT-5.4 nano for cost-optimized deployments
• Leverage computer use and web search capabilities in the API to enable AI agents that can interact with external systems and retrieve live information

See OpenAI pricing, reviews and alternatives →