GLM-5.3 vs GPT-5.6 Sol
Wins 1 of 7 areas
Agents
Wins 5 of 7 areas
Reasoning · Facts · Math · Long documents · Following instructions
GPT-5.6 Sol is the stronger all-rounder.GLM-5.3 is cheaper and better at agents.
Both rank among the ten best models we track in agents.
Scores updated · 46 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 thinking14GPT-5.6 Sol4 of 5 tests
- MathCompetition and research-level math03GPT-5.6 Sol3 of 3 tests
- FactsGetting facts right instead of making them up12GPT-5.6 Sol2 of 3 tests
- Long documentsFinding answers in very long texts01GPT-5.6 Sol1 of 1 test
- Following instructionsDoing exactly what it is asked01GPT-5.6 Sol1 of 1 test
- AgentsCarrying out multi-step tasks on its own31GLM-5.33 of 4 tests
- CodingWriting and fixing software22Even2 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.
GLM-5.3 costs 76% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where GPT-5.6 Sol pulls ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+53.7points ahead
- Short factual questions, answered correctlySimpleQA Verified+28.7points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+25.5points ahead
Where GLM-5.3 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+62.6points ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+6points ahead
- Fixes real GitHub issues, working as an agentLiveBench · Agentic Coding+4.7points ahead
Every test, side by side
All 46 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingEven
- LiveBench · CodingGPT-5.6 Sol by 4.97983.9+4.9
- LiveBench · Agentic CodingGLM-5.3 by 4.760.956.2+4.7
- Terminal-Bench 2.1GPT-5.6 Sol by 4.183.988+4.1
- SciCodeGLM-5.3 by 1.95957.1+1.9
- LMArena · WebDevtie16231620tie
AgentsGLM-5.3
- AA IT-Bench SREGPT-5.6 Sol by 10.146.156.2+10.1
- τ-Bench V3 · BankingGLM-5.3 by 650.344.3+6
- GDPValGLM-5.3 by 257.655.6+2
- Terminal-Bench 4.0GLM-5.3 by 241.939.9+2
ReasoningGPT-5.6 Sol
- CritPtGPT-5.6 Sol by 13.219.132.3+13.2
- Humanity's Last ExamGPT-5.6 Sol by 7.242.349.5+7.2
- LiveBench · ReasoningGPT-5.6 Sol by 5.985.891.7+5.9
- GPQA DiamondGPT-5.6 Sol by 2.491.794.1+2.4
- SimpleBenchGLM-5.3 by 1.466.264.8+1.4
FactsGPT-5.6 Sol
- AA-Omniscience · Non-hallucinationGLM-5.3 by 62.670.47.8+62.6
- SimpleQA VerifiedGPT-5.6 Sol by 28.74169.7+28.7
- AA-Omniscience · AccuracyGPT-5.6 Sol by 25.533.959.4+25.5
MathGPT-5.6 Sol
- FrontierMath Tier 4GPT-5.6 Sol by 53.729.383+53.7
- FrontierMath Tiers 1-3 (v2)GPT-5.6 Sol by 20.368.889.1+20.3
- LiveBench · MathematicsGPT-5.6 Sol by 8.387.996.2+8.3
Following instructionsGPT-5.6 Sol
- LiveBench · Instruction FollowingGPT-5.6 Sol by 2.669.371.8+2.6
Other results24 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.
- Agents' Last ExamGPT-5.6 Sol by 24.228.552.7+24.2
- ToolathlonGLM-5.3 by 157358+15
- livebench_data_analysisGPT-5.6 Sol by 9.670.279.8+9.6
- livebench_languageGPT-5.6 Sol by 7.879.987.7+7.8
- AA-OmniscienceGPT-5.6 Sol by 7.714.322+7.7
- DeepSWE 1.1GPT-5.6 Sol by 6.166.973+6.1
- DeepSWE v1.1 (Resolved)GPT-5.6 Sol by 6.166.973+6.1
- Terminal-bench 3.0GPT-5.6 Sol by 6.128.334.4+6.1
- Program BenchGPT-5.6 Sol by 61925+6
- DeepSWEGPT-5.6 Sol by 5.866.972.7+5.8
- GDPval-AA v2GLM-5.3 by 58 rating points17691711+58 rating
- Terminal-Bench 4.0GLM-5.3 by 4.541.837.3+4.5
- ProgramBench (Almost Solved)GPT-5.6 Sol by 41923+4
- ProgramBench (Almost@1)GPT-5.6 Sol by 41923+4
- PostTrainBenchGLM-5.3 by 3.639.836.2+3.6
- AA Agentic IndexGLM-5.3 by 2.953.450.5+2.9
- Artificial Analysis Coding IndexGPT-5.6 Sol by 2.674.877.4+2.6
- AA IntelligenceGPT-5.6 Sol by 2.244.847+2.2
- HLE (with tools)GPT-5.6 Sol by 262.564.5+2
- Toolathlon VerifiedGPT-5.6 Sol by 1.97374.9+1.9
- NL2Repo-Bench (Score)GLM-5.3 by 1.25856.8+1.2
- Agents' Last Exam (ALE-CLI)tie28.528.6tie
- CyberGymtie84.584.5tie
- SWE-Marathontie42.542.5tie
Questions people ask
Which is better, GLM-5.3 or GPT-5.6 Sol?
GPT-5.6 Sol wins five of the seven areas where both have results: reasoning, facts, math, long documents and following instructions. GLM-5.3 wins agents, and costs 76% less. They are level on coding.
Which is better for coding?
Neither. They win 2 coding tests each of the 5 both models report, and 1 is a tie.
Which is cheaper?
GLM-5.3 costs $1.40 per million input tokens and $4.40 per million output tokens; GPT-5.6 Sol costs $4.00 and $20.00. That makes GLM-5.3 about 76% cheaper for the same work.
How do you compare the two?
We use the 46 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 24 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.