Claude Sonnet 4: pricing, specs, and how to use it (2026)
Claude Sonnet 4 is an AI model from Anthropic, available alongside ChatGPT, Claude, Gemini, and 300+ other models inside Admix on one subscription from $8.99/mo.
Quick specs
| Provider | Anthropic |
| Model ID | anthropic/claude-sonnet-4 |
| Input price | $3.00 / 1M tokens |
| Output price | $15.00 / 1M tokens |
| Tier | pro |
| Accepts images | Yes |
| Category | Advanced |
How to use Claude Sonnet 4 in Admix
Open Admix, pick Claude Sonnet 4 from the model list, and start chatting. You can also run the same prompt through Claude Sonnet 4 and other frontier models like Claude, GPT-5, and Gemini side by side, then pick the best answer or spot disagreement. One subscription, no separate API key.
Compare Claude Sonnet 4 with other AI models
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FAQ
What is Claude Sonnet 4?
Claude Sonnet 4 is an AI model from Anthropic, available inside Admix alongside 300+ other frontier and open-source AI models on one subscription.
How much does Claude Sonnet 4 cost?
Claude Sonnet 4 costs $3.00 per million input tokens and $15.00 per million output tokens. In Admix you use it inside one subscription starting at $8.99 per month, no separate API key required.
Can I compare Claude Sonnet 4 with ChatGPT, Claude, or Gemini?
Yes. Admix lets you run the same prompt through Claude Sonnet 4 and any of the other 300+ models in the catalog, then see the answers side by side.
Try Claude Sonnet 4 in Admix
One subscription, 300+ AI models including Claude Sonnet 4. Compare any of them side by side from $8.99/mo.
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