Claude Opus 4 vs Kimi Linear 48B A3B Instruct
Wins 4 of 4 areas
Coding · Reasoning · Long documents · Following instructions
Wins 0 of 4 areas
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Claude Opus 4 is the stronger all-rounder.
Scores updated · 9 tests both models report · How we compare
Where each one wins
Tests won in each of the four 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.
Long documents and following instructions 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.
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 pulls ahead
- Reasons across sets of long documentsAA-LCR+41.3points ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+38.4points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+25.6points ahead
Where Kimi Linear 48B A3B Instruct pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 9 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 4
- SciCodeClaude Opus 4 by 19.939.819.9+19.9
- Terminal-Bench HardClaude Opus 4 by 19.731.111.4+19.7
ReasoningClaude Opus 4
- GPQA DiamondClaude Opus 4 by 38.479.641.2+38.4
- Humanity's Last ExamClaude Opus 4 by 9.812.32.5+9.8
Following instructionsClaude Opus 4
- IFBenchClaude Opus 4 by 25.653.728.1+25.6
Other results3 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.
- τ²-Bench Telecom (AA run)Claude Opus 4 by 73.473.40+73.4
- Artificial Analysis Coding IndexClaude Opus 4 by 19.83414.2+19.8
- AA IntelligenceClaude Opus 4 by 13.320.67.3+13.3
Questions people ask
Which is better, Claude Opus 4 or Kimi Linear 48B A3B Instruct?
Claude Opus 4 wins all four areas where both have results: coding, reasoning, long documents and following instructions. Kimi Linear 48B A3B Instruct wins none.
Which is better for coding?
Claude Opus 4. It wins 2 of the 2 coding tests both models report; Kimi Linear 48B A3B Instruct wins none.
How do you compare the two?
We use the 9 benchmark tests both models have published scores on. The verdict counts the 6 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 3 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.