MiMo V2.6 Flash RL vs Claude Opus 5
Wins 0 of 6 areas
—
Wins 5 of 6 areas
Coding · Agents · Reasoning · Images and charts · Long documents
Claude Opus 5 is the stronger all-rounder.MiMo V2.6 Flash RL is cheaper.
Scores updated · 23 tests both models report · How we compare
Where each one wins
Tests won in each of the six 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 software03Claude Opus 53 of 3 tests
- AgentsCarrying out multi-step tasks on its own03Claude Opus 53 of 3 tests
- ReasoningHard problems that need careful thinking02Claude Opus 52 of 2 tests
- Images and chartsUnderstanding pictures, charts and video02Claude Opus 52 of 2 tests
- Long documentsFinding answers in very long texts01Claude Opus 51 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
Long documents rests on a single test.
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.
MiMo V2.6 Flash RL costs 99% 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
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+33.9points ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+26.3points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+19.8points ahead
Where MiMo V2.6 Flash RL pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+6.4points ahead
Every test, side by side
All 23 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 53 rating points16381691+53 rating
- SciCodeClaude Opus 5 by 5.151.356.4+5.1
- Terminal-Bench 2.1Claude Opus 5 by 1.587.689.1+1.5
AgentsClaude Opus 5
- Terminal-Bench 4.0Claude Opus 5 by 26.322.749+26.3
- GDPValClaude Opus 5 by 5.755.461.1+5.7
- OSWorld-VerifiedClaude Opus 5 by 2.680.883.4+2.6
ReasoningClaude Opus 5
- Humanity's Last ExamClaude Opus 5 by 19.835.154.9+19.8
- CritPtClaude Opus 5 by 17.11229.1+17.1
FactsEven
- AA-Omniscience · AccuracyClaude Opus 5 by 33.92760.9+33.9
- AA-Omniscience · Non-hallucinationMiMo V2.6 Flash RL by 6.445.639.2+6.4
Images and chartsClaude Opus 5
- MMMU-ProClaude Opus 5 by 11.673.184.7+11.6
- LMArena · VisionClaude Opus 5 by 57 rating points12601317+57 rating
Other results10 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 76.5985.5+76.5
- Program BenchClaude Opus 5 by 59.42685.4+59.4
- AA-OmniscienceClaude Opus 5 by 49.8-12.737.1+49.8
- Terminal-Bench-Science 0.1Claude Opus 5 by 24.74.329+24.7
- Terminal-Bench 4.0Claude Opus 5 by 2328.851.8+23
- AA IntelligenceClaude Opus 5 by 12.937.950.8+12.9
- Toolathlon VerifiedClaude Opus 5 by 773.680.6+7
- JobBenchClaude Opus 5 by 4.561.265.7+4.5
- Agents' Last ExamClaude Opus 5 by 127.628.6+1
- DeepSWE 1.1tie67.968.8tie
Questions people ask
Which is better, MiMo V2.6 Flash RL or Claude Opus 5?
Claude Opus 5 wins five of the six areas where both have results: coding, agents, reasoning, images and charts and long documents. MiMo V2.6 Flash RL wins none, but costs 99% less. They are level on facts.
Which is better for coding?
Claude Opus 5. It wins 3 of the 3 coding tests both models report; MiMo V2.6 Flash RL wins none.
Which is cheaper?
MiMo V2.6 Flash RL costs $0.14 per million input tokens and $0.28 per million output tokens; Claude Opus 5 costs $5.00 and $25.00. That makes MiMo V2.6 Flash RL about 99% cheaper for the same work.
How do you compare the two?
We use the 23 benchmark tests both models have published scores on. The verdict counts the 13 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 10 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.