Claude Sonnet 4.6
Claude workhorse for coding agents, careful analysis, and production cost control
ECI STANDING#36 of 266
SCORE152.25149.69–154.47 CI
FRONTIER LAGLaunched 3.0 months behindScores about what Gemini 3 Pro did in November 2025.
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From the lab
Launch announcement · Feb 17, 2026Released Claude Sonnet 4.6RELEASE DATEFeb 17, 2026
WEIGHTSClosed weights
CONTEXT WINDOW1M
MAX OUTPUT64K
REASONINGYes
TOOL CALLINGYes
INPUTStext, image, pdf
OUTPUTStext
Specifications from Models.dev. Availability and limits may differ by provider. Benchmark scores come from Epoch AI under CC BY 4.0.