Anthropic API
API access to Claude models with prompt caching, extended thinking, tool use, computer use, files, and the Agent SDK for production agents.
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Примеры
Альтернативы Anthropic API
Vercel AI SDK
TypeScript toolkit for building AI-powered apps. Streaming, tool calls, structured output, and provider-agnostic interfaces for any LLM.
OpenAI API
Programmatic access to GPT-5, o1 reasoning, embeddings, image and audio models with Responses API, function calling, and structured outputs.
OpenRouter
Unified API for 400+ AI models from OpenAI, Anthropic, Google, Meta, and others. Automatic fallback, load balancing, and per-token pricing.
LangChain
Open-source framework for building LLM applications with chains, agents, and tools. Python and JavaScript libraries plus LangSmith observability.
LlamaIndex
Data framework for LLM applications focused on RAG — connectors, indexing, query engines, and agents over private data.
