
Open-source AI SDK with a unified interface across multiple providers, no vendor lock-in.
TanStack AI brings artificial intelligence capabilities into the TanStack ecosystem, enabling developers to compose AI-powered features directly within their applications. It provides hooks and utilities for streaming LLM responses, managing conversation state, and integrating AI services with reactive data patterns.
Built on the same headless, type-safe principles as other TanStack libraries, it allows teams to add intelligent features without sacrificing control over UI or application architecture.


Typed Pydantic AI agents with validated outputs and observability.



StableBrowse Agent Experience Platform helps devtool, infrastructure, and SaaS companies make their products usable by AI agents.


Unified API platform connecting developers to AI models from many providers with standardized billing.


Secure enterprise portal for multiple large language model platforms with reusable language skills and usage-based pricing.


Hosted gateway for routing and governing traffic across hosted and self-hosted AI models.


Open source AI gateway routing every model behind one zero-markup OpenAI-compatible endpoint.

Typed Pydantic AI agents with validated outputs and observability.

Production LLM applications built with LangChain and LangGraph.

An open-source AI gateway and proxy that calls many large language model APIs in the OpenAI format.



A unified AI gateway and LLM router exposing one OpenAI-compatible endpoint across 600+ models.



Pydantic validation, agent runtime, and observability across one lifecycle.


Anthropic's API for calling Claude models directly, the frontier-model counterpart to OpenRouter's multi-provider routing.


OpenAI-compatible API proxy with built-in conversational memory supporting 300+ models.


Backdrop provides always-on cloud AI coworkers with shared memory, tool access, and approval gating.

StableBrowse Agent Experience Platform helps devtool, infrastructure, and SaaS companies make their products usable by AI agents.

Unified API platform connecting developers to AI models from many providers with standardized billing.

Secure enterprise portal for multiple large language model platforms with reusable language skills and usage-based pricing.

Hosted gateway for routing and governing traffic across hosted and self-hosted AI models.

Open source AI gateway routing every model behind one zero-markup OpenAI-compatible endpoint.

An open-source AI gateway and proxy that calls many large language model APIs in the OpenAI format.

River API lets developers fine-tune and run reinforcement learning on open-weight models.

A unified AI gateway and LLM router exposing one OpenAI-compatible endpoint across 600+ models.

Multi-model AI chat offering access to frontier LLMs under one plan.

Pydantic validation, agent runtime, and observability across one lifecycle.

Anthropic's API for calling Claude models directly, the frontier-model counterpart to OpenRouter's multi-provider routing.

OpenAI-compatible API proxy with built-in conversational memory supporting 300+ models.

Backdrop provides always-on cloud AI coworkers with shared memory, tool access, and approval gating.
