Claude Sonnet 3.7
Balanced Claude model for coding, analysis, agent workflows, and cost control
- Strongest at
- Writing Better than 40% of the past year's models · 2 of 4 benchmarks
- Context window
- 200K tokens in · 64K out
Capability profile
Where it lands among 91 models released in the past year. 50 is the average model.
This modelEvery model from the past year
Coding
No results yet
Writing
53Better than 40%
Reading & documents
No results yet
Reasoning
No results yet
Math
No results yet
Science
No results yet
Visual reasoning
No results yet
Computer use
No results yet
Where these scores come from
Each capability combines the published benchmarks listed here, rescaled so 50 is the reference average and 15 points is one standard deviation. A hollow marker rests on a single benchmark.
The Claude Sonnet line
6 releases in the Claude Sonnet line.
Claude Sonnet 3.7Feb 19, 202592dClaude Sonnet 4May 22, 2025130dClaude Sonnet 4.5Sep 29, 2025141dClaude Sonnet 4.6Feb 17, 2026133dClaude Sonnet 5Jun 30, 202690dClaude Sonnet 5.5Sep 28, 2026
A newer release is out: Claude Sonnet 5.5.
Anthropic's past year
12 release days in the past year, about one every 30 days. The next is expected around Nov 12, 2026. Forecasts ↗
NovDecJanFebMarAprMayJunJulAugSepOctNov
Specifications
RELEASE DATEFeb 19, 2025
WEIGHTSClosed weights
CONTEXT WINDOW200K
MAX OUTPUT64K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext, image/jpeg, image/png, image/gif, image/webp, application/pdf
OUTPUTStext
Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.