Claude Sonnet 4.5
Claude Sonnet 4.5 is a chat model from Anthropic, released on 2025-09-30. It accepts text and image input and returns text output. The recorded context window is 1000K, and the recorded maximum output is 64K. Cataloged capabilities include Reasoning model and Multilingual. The model weights are proprietary and are not published for download. Use the linked references to confirm current access, licensing, and provider-specific limits.
Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology
| Type | Condition | Input | Output |
|---|---|---|---|
| Text | - | $3.00/ 1M | $15.00/ 1M |
| Text | Context > 200000 | $6.00/ 1M | $22.50/ 1M |
| Type | Condition | Input | Output |
|---|---|---|---|
| Text | - | $1.50/ 1M | $7.50/ 1M |
| Type | TTL | Write | Read |
|---|---|---|---|
| Text | - | $3.75/ 1M | $0.300/ 1M |
Claude Sonnet 4.5 currently shows benchmark results led by AIME2025 (1 / 107, score 100), MMLU Pro (7 / 132, score 88), SWE-bench Verified (8 / 113, score 82). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.
Claude Sonnet 4.5 is a chat model from Anthropic, released on 2025-09-30.
It accepts text and image input and produces text output. Its cataloged capabilities include Reasoning model and Multilingual. The recorded context window is 1000K, and the recorded maximum output is 64K.
The model weights are proprietary and are not published for download. The page records 10 API pricing rules from Anthropic; current provider pricing and conditions should be checked before deployment. The evaluation section contains 43 cataloged benchmark results with their recorded modes and scores. The page links 3 release, model-card, repository, or provider references for checking the underlying claims. Specifications, availability, and prices can change; undisclosed values are intentionally left unstated.
Claude Sonnet 4.5 is a chat model from Anthropic, released on 2025-09-30. It accepts text and image input and returns text output. The recorded context window is 1000K, and the recorded maximum output is 64K. Cataloged capabilities include Reasoning model and Multilingual. The model weights are proprietary and are not published for download. Use the linked references to confirm current access, licensing, and provider-specific limits.
The current model record lists text and image as input and text as output.
The recorded context window is 1000K, and the recorded maximum output is 64K. Fields without a source-backed value remain undisclosed.
The page records 10 API pricing rules from Anthropic; current provider pricing and conditions should be checked before deployment.
The evaluation section contains 43 cataloged benchmark results with their recorded modes and scores. Compare only results that use the same benchmark version and evaluation mode.
The model weights are proprietary and are not published for download. Review the linked license text before commercial or derivative use.
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