GPT-5.6 Sol vs MiMo V2.6 Flash RL
Wins 4 of 6 areas
Agents · Reasoning · Images and charts · Long documents
Wins 0 of 6 areas
—
GPT-5.6 Sol is the stronger all-rounder.MiMo V2.6 Flash RL is cheaper.
Scores updated · 24 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.
- AgentsCarrying out multi-step tasks on its own20GPT-5.6 Sol2 of 3 tests · 1 tie
- ReasoningHard problems that need careful thinking20GPT-5.6 Sol2 of 2 tests
- Images and chartsUnderstanding pictures, charts and video20GPT-5.6 Sol2 of 2 tests
- Long documentsFinding answers in very long texts10GPT-5.6 Sol1 of 1 test
- CodingWriting and fixing software11Even1 each · 1 tie
- 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 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 GPT-5.6 Sol pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+32.4points ahead
- Research-level physics problemsCritPt+20.3points ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+17.2points ahead
Where MiMo V2.6 Flash RL pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+37.8points ahead
Every test, side by side
All 24 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingEven
- SciCodeGPT-5.6 Sol by 5.857.151.3+5.8
- LMArena · WebDevMiMo V2.6 Flash RL by 23 rating points16151638+23 rating
- Terminal-Bench 2.1tie8887.6tie
AgentsGPT-5.6 Sol
- Terminal-Bench 4.0GPT-5.6 Sol by 17.239.922.7+17.2
- OSWorld-VerifiedGPT-5.6 Sol by 2.28380.8+2.2
- GDPValtie55.455.4tie
ReasoningGPT-5.6 Sol
- CritPtGPT-5.6 Sol by 20.332.312+20.3
- Humanity's Last ExamGPT-5.6 Sol by 14.449.535.1+14.4
FactsEven
- AA-Omniscience · Non-hallucinationMiMo V2.6 Flash RL by 37.87.845.6+37.8
- AA-Omniscience · AccuracyGPT-5.6 Sol by 32.459.427+32.4
Images and chartsGPT-5.6 Sol
- MMMU-ProGPT-5.6 Sol by 10.383.473.1+10.3
- LMArena · VisionGPT-5.6 Sol by 22 rating points12821260+22 rating
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.
- AA-OmniscienceGPT-5.6 Sol by 34.722-12.7+34.7
- Agents' Last ExamGPT-5.6 Sol by 25.152.727.6+25.1
- GDP (Surge AI)GPT-5.6 Sol by 21.730.79+21.7
- Terminal-Bench-Science 0.1GPT-5.6 Sol by 18.122.44.3+18.1
- JobBenchMiMo V2.6 Flash RL by 15.845.461.2+15.8
- CyberGymMiMo V2.6 Flash RL by 10.684.595.1+10.6
- AA IntelligenceGPT-5.6 Sol by 9.14737.9+9.1
- Terminal-Bench 4.0GPT-5.6 Sol by 8.537.328.8+8.5
- DeepSWE 1.1GPT-5.6 Sol by 5.17367.9+5.1
- Program BenchMiMo V2.6 Flash RL by 32326+3
- Toolathlon VerifiedGPT-5.6 Sol by 1.374.973.6+1.3
Questions people ask
Which is better, GPT-5.6 Sol or MiMo V2.6 Flash RL?
GPT-5.6 Sol wins four of the six areas where both have results: agents, reasoning, images and charts and long documents. MiMo V2.6 Flash RL wins none, but costs 98% less. They are level on coding and facts.
Which is better for coding?
Neither. They win 1 coding test each of the 3 both models report, and 1 is a tie.
Which is cheaper?
GPT-5.6 Sol costs $4.00 per million input tokens and $20.00 per million output tokens; MiMo V2.6 Flash RL costs $0.14 and $0.28. That makes MiMo V2.6 Flash RL about 98% cheaper for the same work.
How do you compare the two?
We use the 24 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 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.