Pay per message · no subscription
Every top AI model,
one router.
Claude, Grok and GPT behind a single chat and a single API. Name a model, switch mid-conversation, or let vexer route each message to the one that fits — with an automatic fallback when a provider is down. No monthly lock-in — pay only for what you send.
Get startedOnly pay for what you send
AutoClaude Opus 4.8Claude Sonnet 5Claude Fable 5Grok 4.5GPT-5.6 Sol
Every top model
Claude, Grok and GPT behind one login — switch mid-conversation, no extra tabs.
Automatic routing
Pick “Auto” and each message goes to the model that fits it. Every model has a fallback if a provider is down.
One API, drop-in
OpenAI- and Anthropic-compatible endpoints. Works with Claude Code, the OpenAI SDK and curl.
Streaming + vision
Fast streamed replies, syntax-highlighted code, and image inputs on vision models.