For developers

One API.Every model.

GPT-5, Claude Opus 4.7, Gemini 2.5, Llama 4, DeepSeek R2 — one OpenAI-compatible endpoint. Streaming, vision, voice, tool calls. Bring your own provider keys on Pro, or use ours.

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What developers use most.

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OpenAI-compatible API for every model

Drop-in replacement for OpenAI SDKs. Switch from gpt-4 to claude-opus-4.7 by changing one string. Streaming, vision, function calling, tool use — same shape.

key

Bring your own keys

Pro tier supports BYOK for OpenAI, Anthropic, Google, DeepSeek and 12 more providers. Your billing, your usage caps, our gateway and observability.

psychology

Souls as deployable agents

Build an agent in Soul Studio — tools, memory, RAG. Get an OpenAI-compatible API endpoint + a Telegram bot username automatically. Zero deploy.

Pro at $19/mo unlocks the unified API with 3,000 tokens and BYOK. Ultra at $59/mo gets 8,000 tokens, unlimited campaigns and early-access models.

Common questions

Yes. Same endpoint format, same streaming, same tool-call shape. Most OpenAI SDK code works by changing the base URL and key.
On the Team tier, yes — per-member token budgets, audit log, per-key usage.
Yes — for every model that supports it natively (OpenAI, Anthropic, Google). For others we provide a unified bridge.

Build with every AI. Pay for one.

Free tier includes API access (capped). No credit card.

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