MiniMax M3.1 Flash vs Claude Opus 5
Wins 0 of 3 areas
—
Wins 3 of 3 areas
Coding · Reasoning · Images and charts
Claude Opus 5 is the stronger all-rounder.MiniMax M3.1 Flash is cheaper.
Scores updated · 14 tests both models report · How we compare
Where each one wins
Tests won in each of the three 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.
Coding, reasoning and images and charts 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.
MiniMax M3.1 Flash costs 98% 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 5 pulls ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+11.5points ahead
- Reasoning about charts from research papersCharXiv (RQ)+1.2points ahead
Where MiniMax M3.1 Flash pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 14 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 5
- LMArena · WebDevClaude Opus 5 by 100 rating points15901690+100 rating
Images and chartsClaude Opus 5
- CharXiv (RQ)Claude Opus 5 by 1.282.583.7+1.2
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.
- GDP (Surge AI)Claude Opus 5 by 64.720.885.5+64.7
- Terminal-Bench 4.0Claude Opus 5 by 13.738.151.8+13.7
- OSWorld 2.0Claude Opus 5 by 8.961.770.6+8.9
- SWE Refactor BenchClaude Opus 5 by 82331+8
- LOCA-Bench 256KMiniMax M3.1 Flash by 6.660.353.7+6.6
- DeepSWE 1.1MiniMax M3.1 Flash by 4.973.768.8+4.9
- BabyVisionClaude Opus 5 by 3.19194.1+3.1
- PostTrain Bench v1.1Claude Opus 5 by 1.139.340.4+1.1
- Agents' Last ExamMiniMax M3.1 Flash by 129.628.6+1
- GDP.pdf AAtie20.821.6tie
- BankerToolBenchtie76.276.2tie
Questions people ask
Which is better, MiniMax M3.1 Flash or Claude Opus 5?
Claude Opus 5 wins all three areas where both have results: coding, reasoning and images and charts. MiniMax M3.1 Flash wins none, but costs 98% less.
Which is better for coding?
Claude Opus 5. It wins the one coding test both models report.
Which is cheaper?
MiniMax M3.1 Flash costs $0.15 per million input tokens and $0.60 per million output tokens; Claude Opus 5 costs $5.00 and $25.00. That makes MiniMax M3.1 Flash about 98% cheaper for the same work.
How do you compare the two?
We use the 14 benchmark tests both models have published scores on. The verdict counts the 3 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.