Claude 3.7 Sonnet vs Claude Opus 4.1
Wins 0 of 5 areas
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Wins 5 of 5 areas
Coding · Reasoning · Images and charts · Long documents · Following instructions
Claude Opus 4.1 is the stronger all-rounder.Claude 3.7 Sonnet is cheaper.
Scores updated · 21 tests both models report · How we compare
Where each one wins
Tests won in each of the five areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- CodingWriting and fixing software02Claude Opus 4.12 of 3 tests · 1 tie
- ReasoningHard problems that need careful thinking02Claude Opus 4.12 of 3 tests · 1 tie
- Following instructionsDoing exactly what it is asked02Claude Opus 4.12 of 2 tests
- Images and chartsUnderstanding pictures, charts and video01Claude Opus 4.11 of 1 test
- Long documentsFinding answers in very long texts01Claude Opus 4.11 of 1 test
Images and charts and long documents rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Claude 3.7 Sonnet costs 80% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Claude Opus 4.1 pulls ahead
- Reasons across sets of long documentsAA-LCR+24.3points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+13.1points ahead
- Harder college exam questions with imagesMMMU-Pro+7.8points ahead
Where Claude 3.7 Sonnet pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 21 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 4.1
- Terminal-Bench HardClaude Opus 4.1 by 13.121.234.3+13.1
- SWE-bench VerifiedClaude Opus 4.1 by 4.270.374.5+4.2
- SciCodetie40.340.9tie
ReasoningClaude Opus 4.1
- GPQA DiamondClaude Opus 4.1 by 3.777.280.9+3.7
- Humanity's Last ExamClaude Opus 4.1 by 2.89.712.5+2.8
- CritPttie0.90tie
Images and chartsClaude Opus 4.1
- MMMU-ProClaude Opus 4.1 by 7.860.167.9+7.8
Following instructionsClaude Opus 4.1
- IFBenchClaude Opus 4.1 by 7.148.355.4+7.1
- Multi-ChallengeClaude Opus 4.1 by 5.651.657.2+5.6
Other results11 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- AIME 2025Claude Opus 4.1 by 23.254.878+23.2
- τ²-Bench Telecom (AA run)Claude Opus 4.1 by 16.754.771.4+16.7
- metr_re_benchClaude Opus 4.1 by 15015+15
- Terminal-BenchClaude Opus 4.1 by 8.135.243.3+8.1
- metr_hcastClaude Opus 4.1 by 6.454.260.6+6.4
- AA IntelligenceClaude Opus 4.1 by 5.117.722.8+5.1
- MMMLUClaude Opus 4.1 by 3.486.189.5+3.4
- TAU-bench (airline)Claude 3.7 Sonnet by 2.458.456+2.4
- metr_swaaClaude Opus 4.1 by 1.398.7100+1.3
- TAU-bench (retail)Claude Opus 4.1 by 1.281.282.4+1.2
- Artificial Analysis Coding Indextie36.436.5tie
Questions people ask
Which is better, Claude 3.7 Sonnet or Claude Opus 4.1?
Claude Opus 4.1 wins all five areas where both have results: coding, reasoning, images and charts, long documents and following instructions. Claude 3.7 Sonnet wins none, but costs 80% less.
Which is better for coding?
Claude Opus 4.1. It wins 2 of the 3 coding tests both models report; Claude 3.7 Sonnet wins none, and 1 is a tie.
Which is cheaper?
Claude 3.7 Sonnet costs $3.00 per million input tokens and $15.00 per million output tokens; Claude Opus 4.1 costs $15.00 and $75.00. That makes Claude 3.7 Sonnet about 80% cheaper for the same work.
How do you compare the two?
We use the 21 benchmark tests both models have published scores on. The verdict counts the 10 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 11 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.