Gemma 4 26B A4B vs GPT-5.1
Wins 0 of 7 areas
—
Wins 6 of 7 areas
Coding · Agents · Reasoning · Facts · Images and charts · Long documents
GPT-5.1 is the stronger all-rounder.Gemma 4 26B A4B is cheaper.
Scores updated · 35 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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 software06GPT-5.16 of 6 tests
- AgentsCarrying out multi-step tasks on its own03GPT-5.13 of 3 tests
- ReasoningHard problems that need careful thinking03GPT-5.13 of 3 tests
- FactsGetting facts right instead of making them up12GPT-5.12 of 3 tests
- Images and chartsUnderstanding pictures, charts and video12GPT-5.12 of 3 tests
- Long documentsFinding answers in very long texts01GPT-5.11 of 1 test
- Following instructionsDoing exactly what it is asked00Even0 each · 1 tie
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.
Gemma 4 26B A4B costs 95% 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-5.1 pulls ahead
- Fixes real GitHub issues in Python projectsSWE-bench Verified+58.9points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+34.5points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+31.9points ahead
Where Gemma 4 26B A4B pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 35 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5.1
- SWE-bench VerifiedGPT-5.1 by 58.917.476.3+58.9
- Terminal-Bench HardGPT-5.1 by 31.913.645.5+31.9
- Terminal-Bench 2.1GPT-5.1 by 13.43952.4+13.4
- LiveCodeBench v6GPT-5.1 by 9.977.187+9.9
- LMArena · WebDevGPT-5.1 by 36 rating points13591395+36 rating
- SciCodeGPT-5.1 by 3.34043.3+3.3
AgentsGPT-5.1
- BrowseCompGPT-5.1 by 24.526.350.8+24.5
- GDPValGPT-5.1 by 13.13.416.5+13.1
- τ-Bench V3 · BankingGPT-5.1 by 3.91215.9+3.9
ReasoningGPT-5.1
- Humanity's Last ExamGPT-5.1 by 9.219.328.5+9.2
- GPQA DiamondGPT-5.1 by 8.179.287.3+8.1
- CritPtGPT-5.1 by 4.904.9+4.9
FactsGPT-5.1
- AA-Omniscience · Non-hallucinationGPT-5.1 by 34.513.648.1+34.5
- AA-Omniscience · AccuracyGPT-5.1 by 18.619.137.7+18.6
- Vectara HHEM hallucination ratelower is betterGemma 4 26B A4B by 6.95.212.1+6.9
Images and chartsGPT-5.1
- MMMUGPT-5.1 by 778.485.4+7
- MMMU-ProGPT-5.1 by 6.369.275.5+6.3
- LMArena · VisionGemma 4 26B A4B by 10 rating points12601250+10 rating
Other results15 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-5.1 by 56.2-50.85.4+56.2
- τ²-Bench Telecom (AA run)GPT-5.1 by 38.343.681.9+38.3
- HLE (with tools)GPT-5.1 by 25.517.242.7+25.5
- vectara_avg_summary_lengthGPT-5.1 by 187.3 rating points67.1254.4+187.3 rating
- τ²-BenchGPT-5.1 by 14.568.282.7+14.5
- Terminal-Bench 2.0GPT-5.1 by 13.434.247.6+13.4
- AA Agentic IndexGPT-5.1 by 10.61121.6+10.6
- Artificial Analysis Coding IndexGPT-5.1 by 10.139.349.4+10.1
- AA IntelligenceGPT-5.1 by 816.724.7+8
- vectara_factual_consistencyGemma 4 26B A4B by 6.994.887.9+6.9
- MMMLUGPT-5.1 by 4.786.391+4.7
- HMMT Feb. 2025GPT-5.1 by 4.691.796.3+4.6
- MMLU-ProGPT-5.1 by 4.482.687+4.4
- HMMT Nov. 2025GPT-5.1 by 4.287.591.7+4.2
- vectara_answer_ratetie99.8100tie
Questions people ask
Which is better, Gemma 4 26B A4B or GPT-5.1?
GPT-5.1 wins six of the seven areas where both have results: coding, agents, reasoning, facts, images and charts and long documents. Gemma 4 26B A4B wins none, but costs 95% less. They are level on following instructions.
Which is better for coding?
GPT-5.1. It wins 6 of the 6 coding tests both models report; Gemma 4 26B A4B wins none.
Which is cheaper?
Gemma 4 26B A4B costs $0.13 per million input tokens and $0.40 per million output tokens; GPT-5.1 costs $1.25 and $10.00. That makes Gemma 4 26B A4B about 95% cheaper for the same work.
How do you compare the two?
We use the 35 benchmark tests both models have published scores on. The verdict counts the 20 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 15 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.