Claude Opus 4.5 vs Gemma 4 26B A4B
Wins 7 of 8 areas
Coding · Agents · Reasoning · Facts · Images and charts · Math · Long documents
Wins 1 of 8 areas
Following instructions
Claude Opus 4.5 is the stronger all-rounder.Gemma 4 26B A4B is cheaper and better at following instructions.
Scores updated · 51 tests both models report · How we compare
Where each one wins
Tests won in each of the eight areas we test. 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 software61Claude Opus 4.56 of 7 tests
- AgentsCarrying out multi-step tasks on its own30Claude Opus 4.53 of 3 tests
- ReasoningHard problems that need careful thinking30Claude Opus 4.53 of 3 tests
- MathCompetition and research-level math30Claude Opus 4.53 of 3 tests
- Images and chartsUnderstanding pictures, charts and video21Claude Opus 4.52 of 4 tests · 1 tie
- FactsGetting facts right instead of making them up21Claude Opus 4.52 of 3 tests
- Long documentsFinding answers in very long texts10Claude Opus 4.51 of 1 test
- Following instructionsDoing exactly what it is asked01Gemma 4 26B A4B1 of 1 test
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 98% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Claude Opus 4.5 pulls ahead
- Fixes real GitHub issues in Python projectsSWE-bench Verified+63.5points ahead
- Real work tasks from 44 professionsGDPVal+43.9points ahead
- Long, multi-file coding tasks in real codebasesSWE-bench Pro+38.2points ahead
Where Gemma 4 26B A4B pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+14.4points ahead
- Fixes real GitHub issues in many programming languagesSWE-bench Multilingual+10.3points ahead
- Reasoning about charts from research papersCharXiv (RQ)+1.8points ahead
Every test, side by side
All 51 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 4.5
- SWE-bench VerifiedClaude Opus 4.5 by 63.580.917.4+63.5
- SWE-bench ProClaude Opus 4.5 by 38.25213.8+38.2
- Terminal-Bench HardClaude Opus 4.5 by 33.44713.6+33.4
- LMArena · WebDevClaude Opus 4.5 by 110 rating points14691359+110 rating
- SWE-bench MultilingualGemma 4 26B A4B by 10.3717.3+10.3
- SciCodeClaude Opus 4.5 by 9.549.540+9.5
- LiveCodeBench v6Claude Opus 4.5 by 7.784.877.1+7.7
AgentsClaude Opus 4.5
- GDPValClaude Opus 4.5 by 43.947.33.4+43.9
- MCP AtlasClaude Opus 4.5 by 12.362.350+12.3
- BrowseCompClaude Opus 4.5 by 10.73726.3+10.7
ReasoningClaude Opus 4.5
- Humanity's Last ExamClaude Opus 4.5 by 10.830.119.3+10.8
- GPQA DiamondClaude Opus 4.5 by 7.486.679.2+7.4
- CritPtClaude Opus 4.5 by 4.64.60+4.6
FactsClaude Opus 4.5
- AA-Omniscience · AccuracyClaude Opus 4.5 by 27.546.619.1+27.5
- AA-Omniscience · Non-hallucinationClaude Opus 4.5 by 25.43913.6+25.4
- Vectara HHEM hallucination ratelower is betterGemma 4 26B A4B by 5.710.95.2+5.7
Images and chartsClaude Opus 4.5
- MMMU-ProClaude Opus 4.5 by 4.87469.2+4.8
- MMMUClaude Opus 4.5 by 2.380.778.4+2.3
- CharXiv (RQ)Gemma 4 26B A4B by 1.867.269+1.8
- MathVistatie80.279.4tie
MathClaude Opus 4.5
- IMOAnswerBenchClaude Opus 4.5 by 9.78474.3+9.7
- AIME 2026Claude Opus 4.5 by 6.895.188.3+6.8
- HMMT Feb. 2026Claude Opus 4.5 by 6.385.379+6.3
Following instructionsGemma 4 26B A4B
- IFBenchGemma 4 26B A4B by 14.45872.4+14.4
Other results26 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-OmniscienceClaude Opus 4.5 by 64.814-50.8+64.8
- AA Agentic IndexClaude Opus 4.5 by 48.659.611+48.6
- τ²-Bench Telecom (AA run)Claude Opus 4.5 by 45.989.543.6+45.9
- QwenWebBenchClaude Opus 4.5 by 358 rating points15361178+358 rating
- SkillsBench Avg5Claude Opus 4.5 by 3345.312.3+33
- NL2RepoClaude Opus 4.5 by 31.643.211.6+31.6
- τ²-BenchClaude Opus 4.5 by 3098.268.2+30
- HLE (with tools)Claude Opus 4.5 by 2643.217.2+26
- Terminal-Bench 2.0Claude Opus 4.5 by 25.159.334.2+25.1
- Claw-Eval AvgClaude Opus 4.5 by 17.876.658.8+17.8
- SimpleVQAClaude Opus 4.5 by 17.569.752.2+17.5
- QwenClawBenchClaude Opus 4.5 by 13.652.338.7+13.6
- OmniDocBench 1.5Claude Opus 4.5 by 13.387.774.4+13.3
- AA IntelligenceClaude Opus 4.5 by 12.429.116.7+12.4
- C-EvalClaude Opus 4.5 by 9.792.282.5+9.7
- SuperGPQAClaude Opus 4.5 by 9.270.661.4+9.2
- Artificial Analysis Coding IndexClaude Opus 4.5 by 8.547.839.3+8.5
- MMLU-ProClaude Opus 4.5 by 6.989.582.6+6.9
- HMMT Nov. 2025Claude Opus 4.5 by 5.893.387.5+5.8
- vectara_factual_consistencyGemma 4 26B A4B by 5.789.194.8+5.7
- MATH-VisionGemma 4 26B A4B by 5.377.182.4+5.3
- vectara_avg_summary_lengthClaude Opus 4.5 by 47.4 rating points114.567.1+47.4 rating
- MMMLUClaude Opus 4.5 by 4.590.886.3+4.5
- MMLU-ReduxClaude Opus 4.5 by 2.995.692.7+2.9
- HMMT Feb. 2025Claude Opus 4.5 by 1.292.991.7+1.2
- vectara_answer_rateGemma 4 26B A4B by 1.198.799.8+1.1
Questions people ask
Which is better, Claude Opus 4.5 or Gemma 4 26B A4B?
Claude Opus 4.5 wins seven of the eight areas we test: coding, agents, reasoning, facts, images and charts, math and long documents. Gemma 4 26B A4B wins following instructions, and costs 98% less.
Which is better for coding?
Claude Opus 4.5. It wins 6 of the 7 coding tests both models report; Gemma 4 26B A4B wins 1.
Which is cheaper?
Claude Opus 4.5 costs $5.00 per million input tokens and $25.00 per million output tokens; Gemma 4 26B A4B costs $0.13 and $0.40. That makes Gemma 4 26B A4B about 98% cheaper for the same work.
How do you compare the two?
We use the 51 benchmark tests both models have published scores on. The verdict counts the 25 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 26 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.