Gemini 3.1 Pro vs GLM-5.3
Wins 4 of 7 areas
Reasoning · Facts · Long documents · Following instructions
Wins 3 of 7 areas
Coding · Agents · Math
Gemini 3.1 Pro wins more areas, narrowly.GLM-5.3 is cheaper and better at coding.
Scores updated · 38 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.
- ReasoningHard problems that need careful thinking32Gemini 3.1 Pro3 of 5 tests
- FactsGetting facts right instead of making them up21Gemini 3.1 Pro2 of 3 tests
- Long documentsFinding answers in very long texts10Gemini 3.1 Pro1 of 1 test
- Following instructionsDoing exactly what it is asked10Gemini 3.1 Pro1 of 1 test
- CodingWriting and fixing software04GLM-5.34 of 5 tests · 1 tie
- AgentsCarrying out multi-step tasks on its own04GLM-5.34 of 4 tests
- MathCompetition and research-level math12GLM-5.32 of 3 tests
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.
GLM-5.3 costs 59% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Gemini 3.1 Pro pulls ahead
- Short factual questions, answered correctlySimpleQA Verified+32.5points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+21points ahead
- Common-sense trick questionsSimpleBench+13.4points ahead
Where GLM-5.3 pulls ahead
- Real work tasks from 44 professionsGDPVal+42.9points ahead
- Complex command-line tasks across many fieldsTerminal-Bench 4.0+37.9points ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+28.9points ahead
Every test, side by side
All 38 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGLM-5.3
- LMArena · WebDevGLM-5.3 by 177 rating points14461623+177 rating
- LiveBench · Agentic CodingGLM-5.3 by 16.844.160.9+16.8
- Terminal-Bench 2.1GLM-5.3 by 10.173.883.9+10.1
- LiveBench · CodingGLM-5.3 by 2.576.579+2.5
- SciCodetie58.759tie
AgentsGLM-5.3
- GDPValGLM-5.3 by 42.914.757.6+42.9
- Terminal-Bench 4.0GLM-5.3 by 37.9441.9+37.9
- τ-Bench V3 · BankingGLM-5.3 by 28.921.450.3+28.9
- AA IT-Bench SREGLM-5.3 by 15.830.346.1+15.8
ReasoningGemini 3.1 Pro
- SimpleBenchGemini 3.1 Pro by 13.479.666.2+13.4
- Humanity's Last ExamGemini 3.1 Pro by 4.74742.3+4.7
- GPQA DiamondGemini 3.1 Pro by 2.494.191.7+2.4
- LiveBench · ReasoningGLM-5.3 by 1.88485.8+1.8
- CritPtGLM-5.3 by 1.417.719.1+1.4
FactsGemini 3.1 Pro
- SimpleQA VerifiedGemini 3.1 Pro by 32.573.541+32.5
- AA-Omniscience · Non-hallucinationGLM-5.3 by 21.349.170.4+21.3
- AA-Omniscience · AccuracyGemini 3.1 Pro by 2154.933.9+21
MathGLM-5.3
- FrontierMath Tiers 1-3 (v2)GLM-5.3 by 9.159.668.8+9.1
- LiveBench · MathematicsGemini 3.1 Pro by 3.19187.9+3.1
- FrontierMath Tier 4GLM-5.3 by 2.526.829.3+2.5
Following instructionsGemini 3.1 Pro
- LiveBench · Instruction FollowingGemini 3.1 Pro by 9.879.169.3+9.8
Other results16 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.
- GDPval-AA v2GLM-5.3 by 807 rating points9621769+807 rating
- DeepSWEGLM-5.3 by 56.91066.9+56.9
- DeepSWE 1.1GLM-5.3 by 54.91266.9+54.9
- CyberGymGLM-5.3 by 45.738.884.5+45.7
- AA Agentic IndexGLM-5.3 by 43.110.353.4+43.1
- SWE-MarathonGLM-5.3 by 38.5442.5+38.5
- NL2RepoGLM-5.3 by 24.633.458+24.6
- ToolathlonGLM-5.3 by 24.248.873+24.2
- Program BenchGemini 3.1 Pro by 20.539.519+20.5
- PostTrainBenchGLM-5.3 by 18.221.639.8+18.2
- AA-OmniscienceGemini 3.1 Pro by 17.631.914.3+17.6
- AA IntelligenceGLM-5.3 by 15.129.744.8+15.1
- HLE (with tools)GLM-5.3 by 11.151.462.5+11.1
- livebench_data_analysisGemini 3.1 Pro by 8.378.570.2+8.3
- Artificial Analysis Coding IndexGLM-5.3 by 668.874.8+6
- livebench_languageGemini 3.1 Pro by 5.585.479.9+5.5
Questions people ask
Which is better, Gemini 3.1 Pro or GLM-5.3?
Gemini 3.1 Pro wins four of the seven areas where both have results: reasoning, facts, long documents and following instructions. GLM-5.3 wins coding, agents and math, and costs 59% less.
Which is better for coding?
GLM-5.3. It wins 4 of the 5 coding tests both models report; Gemini 3.1 Pro wins none, and 1 is a tie.
Which is cheaper?
Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; GLM-5.3 costs $1.40 and $4.40. That makes GLM-5.3 about 59% cheaper for the same work.
How do you compare the two?
We use the 38 benchmark tests both models have published scores on. The verdict counts the 22 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 16 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.