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Claude Sonnet 4.5

Published byDev AI
10/25/2025

Endpoints

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Ungrouped Endpoints
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What is the Claude Sonnet 4.5 API?

Claude Sonnet 4.5 is the best coding model in the world. It's the strongest model for building complex agents. It’s the best model at using computers. And it shows substantial gains in reasoning and math.

Claude Sonnet 4.5 API is available on the JoJ API marketplace. Subscribe with a single JoJ API key, call it through one gateway, and pay from one wallet — no separate account or contract with the provider.

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Claude Sonnet 4.5 API endpoints

  • POST/chat/completions

    Chat Completions

    Creates a model response for the given chat conversation