GLM-5.3 vs GPT-6 Astra
Wins 0 of 7 areas
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Wins 6 of 7 areas
Coding · Reasoning · Facts · Math · Long documents · Following instructions
GPT-6 Astra is the stronger all-rounder.GLM-5.3 is cheaper.
Both rank among the ten best models we track in agents.
Scores updated · 43 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 thinking05GPT-6 Astra5 of 5 tests
- MathCompetition and research-level math03GPT-6 Astra3 of 3 tests
- CodingWriting and fixing software23GPT-6 Astra3 of 5 tests
- FactsGetting facts right instead of making them up12GPT-6 Astra2 of 3 tests
- Long documentsFinding answers in very long texts01GPT-6 Astra1 of 1 test
- Following instructionsDoing exactly what it is asked01GPT-6 Astra1 of 1 test
- AgentsCarrying out multi-step tasks on its own22Even2 each
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 90% 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-6 Astra pulls ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+68.3points ahead
- Short factual questions, answered correctlySimpleQA Verified+34.6points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+28.7points ahead
Where GLM-5.3 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+21.7points ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+8.9points ahead
- Real work tasks from 44 professionsGDPVal+3.9points ahead
Every test, side by side
All 43 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-6 Astra
- LMArena · WebDevGPT-6 Astra by 145 rating points16221767+145 rating
- Terminal-Bench 2.1GPT-6 Astra by 4.583.988.4+4.5
- LiveBench · Agentic CodingGLM-5.3 by 3.660.957.3+3.6
- SciCodeGLM-5.3 by 2.55956.5+2.5
- LiveBench · CodingGPT-6 Astra by 1.47980.4+1.4
AgentsEven
- Terminal-Bench 4.0GPT-6 Astra by 17.241.959.1+17.2
- τ-Bench V3 · BankingGLM-5.3 by 8.950.341.4+8.9
- GDPValGLM-5.3 by 3.957.553.6+3.9
- AA IT-Bench SREGPT-6 Astra by 2.546.148.6+2.5
ReasoningGPT-6 Astra
- SimpleBenchGPT-6 Astra by 17.466.283.6+17.4
- CritPtGPT-6 Astra by 12.619.131.7+12.6
- Humanity's Last ExamGPT-6 Astra by 12.442.354.7+12.4
- LiveBench · ReasoningGPT-6 Astra by 6.985.892.7+6.9
- GPQA DiamondGPT-6 Astra by 4.491.796.1+4.4
FactsGPT-6 Astra
- SimpleQA VerifiedGPT-6 Astra by 34.64175.6+34.6
- AA-Omniscience · AccuracyGPT-6 Astra by 28.733.962.6+28.7
- AA-Omniscience · Non-hallucinationGLM-5.3 by 21.770.448.7+21.7
MathGPT-6 Astra
- FrontierMath Tier 4GPT-6 Astra by 68.329.397.6+68.3
- FrontierMath Tiers 1-3 (v2)GPT-6 Astra by 24.968.893.7+24.9
- LiveBench · MathematicsGPT-6 Astra by 8.987.996.8+8.9
Following instructionsGPT-6 Astra
- LiveBench · Instruction FollowingGPT-6 Astra by 6.369.375.6+6.3
Other results21 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.
- Terminal-Bench-Science 0.1GPT-6 Astra by 53.89.563.3+53.8
- HLE-DiamondGPT-6 Astra by 45.917.963.8+45.9
- CritPt v2 HardGPT-6 Astra by 3733.570.5+37
- Program BenchGPT-6 Astra by 311950+31
- Agents' Last ExamGPT-6 Astra by 30.828.559.3+30.8
- AA-OmniscienceGPT-6 Astra by 29.114.343.4+29.1
- GDP (Surge AI)GPT-6 Astra by 19.811.231+19.8
- Terminal-Bench 4.0GPT-6 Astra by 15.941.857.7+15.9
- HealthBench ProfessionalGPT-6 Astra by 13.252.866+13.2
- livebench_data_analysisGPT-6 Astra by 12.870.283+12.8
- livebench_languageGPT-6 Astra by 9.579.989.4+9.5
- AA IntelligenceGPT-6 Astra by 7.944.852.7+7.9
- PostTrain Bench v1.2GPT-6 Astra by 7.434.541.9+7.4
- DeepSWE 1.1GPT-6 Astra by 7.266.974.1+7.2
- HiL-Bench (Tools-allowed)GPT-6 Astra by 758.365.3+7
- HLE (with tools)GLM-5.3 by 5.362.557.2+5.3
- PostTrainBenchGPT-6 Astra by 4.539.844.3+4.5
- HealthBenchGPT-6 Astra by 3.754.558.2+3.7
- Artificial Analysis Coding IndexGPT-6 Astra by 2.174.876.9+2.1
- AA Agentic IndexGLM-5.3 by 1.953.451.5+1.9
- SWE Marathon v1.1tie42.542.5tie
Questions people ask
Which is better, GLM-5.3 or GPT-6 Astra?
GPT-6 Astra wins six of the seven areas where both have results: coding, reasoning, facts, math, long documents and following instructions. GLM-5.3 wins none, but costs 90% less. They are level on agents.
Which is better for coding?
GPT-6 Astra. It wins 3 of the 5 coding tests both models report; GLM-5.3 wins 2.
Which is cheaper?
GLM-5.3 costs $1.40 per million input tokens and $4.40 per million output tokens; GPT-6 Astra costs $10.00 and $50.00. That makes GLM-5.3 about 90% cheaper for the same work.
How do you compare the two?
We use the 43 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 21 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.