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Claude Opus 3

Published byDev AI
10/31/2025

Endpoints

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Ungrouped Endpoints
1

What is the Claude Opus 3 API?

Opus, the most intelligent model, outperforms its peers on most of the common evaluation benchmarks for AI systems, including undergraduate level expert knowledge (MMLU), graduate level expert reasoning (GPQA), basic mathematics (GSM8K), and more. It exhibits near-human levels of comprehension and fluency on complex tasks, leading the frontier of general intelligence.

Claude Opus 3 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 Opus 3 API endpoints

  • POST/chat/completions

    Chat Completions

    Creates a model response for the given chat conversation