Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
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AnthropicReasoning

Claude Sonnet 3.7

Previous Gen

The first Claude with hybrid reasoning — a single model that can answer instantly or "think harder" via extended thinking.

Claude Sonnet 3.7 is a reasoning AI model from Anthropic. It costs $3.000 per million input tokens and $15.000 per million output tokens (blended $6.600/M), with a 200K-token context window.

Released Feb 2025Modalities text, visionOfficial model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$3.000/M
per million input tokens
OUTPUT
$15.000/M
per million output tokens
BLENDED 70/30
$6.600/M
default reference rate · how it's calculated →
CONTEXT
200K
200,000 tokens
What it's good at
  • Hybrid extended thinking
  • Coding strength
  • Faithful instruction following
Typical use cases
  • Reasoning-heavy chat
  • Code review
Benchmarks
vs. best public score
MMLU84%
Multitask academic knowledge across 57 subjects.
GPQA Diamond70%
Graduate-level science questions, "Google-proof".
MATH84%
High-school competition math problems.
HumanEval88%
Python function synthesis from docstrings.
SWE-bench Verified49%
Real GitHub issues solved end-to-end.
LMArena Elo1320 Elo
Crowd-sourced head-to-head preference Elo rating.
Hand-curated from each provider's published reports and public leaderboards. Methodology varies across sources — treat as directional rather than authoritative.
More from Anthropic
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in $10.000/Mout $50.000/M
Claude Opus 4.8
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in $5.000/Mout $25.000/M
Claude Opus 4.7
Previous · 1M ctx
in $5.000/Mout $25.000/M
Claude Opus 4.6
Previous · 1M ctx
in $5.000/Mout $25.000/M
Claude Sonnet 4.6
Balanced · 1M ctx
in $3.000/Mout $15.000/M
Claude Opus 4.5
Previous · 200K ctx
in $15.000/Mout $75.000/M
Frequently asked questions

How much does Claude Sonnet 3.7 cost?

Claude Sonnet 3.7 costs $3.000 per million input tokens and $15.000 per million output tokens, for a blended reference rate of $6.600 per million tokens.

What is Claude Sonnet 3.7's context window?

Claude Sonnet 3.7 supports up to 200K tokens of context (200,000 tokens).

What is Claude Sonnet 3.7 best for?

Claude Sonnet 3.7 is well suited to Hybrid extended thinking, Coding strength and Faithful instruction following.

Who makes Claude Sonnet 3.7?

Claude Sonnet 3.7 is developed and served by Anthropic. It was released in Feb 2025.