GLM-4.5 vs GPT-5
Wins 0 of 6 areas
—
Wins 5 of 6 areas
Coding · Agents · Reasoning · Long documents · Following instructions
GPT-5 is the stronger all-rounder.GLM-4.5 is cheaper.
Scores updated · 21 tests both models report · How we compare
Where each one wins
Tests won in each of the six 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 software03GPT-53 of 3 tests
- ReasoningHard problems that need careful thinking03GPT-53 of 3 tests
- AgentsCarrying out multi-step tasks on its own02GPT-52 of 2 tests
- Long documentsFinding answers in very long texts01GPT-51 of 1 test
- Following instructionsDoing exactly what it is asked01GPT-51 of 1 test
- FactsGetting facts right instead of making them up11Even1 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-4.5 costs 75% 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 pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+29points ahead
- Finds hard-to-locate facts by browsing the webBrowseComp+28.5points ahead
- Reasons across sets of long documentsAA-LCR+25.5points ahead
Where GLM-4.5 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+12.1points ahead
Every test, side by side
All 21 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5
- SWE-bench VerifiedGPT-5 by 10.764.274.9+10.7
- Terminal-Bench HardGPT-5 by 10.62232.6+10.6
- SciCodeGPT-5 by 8.134.842.9+8.1
ReasoningGPT-5
- Humanity's Last ExamGPT-5 by 15.51328.5+15.5
- GPQA DiamondGPT-5 by 7.278.285.4+7.2
- CritPtGPT-5 by 5.705.7+5.7
FactsEven
- AA-Omniscience · AccuracyGPT-5 by 15.225.140.3+15.2
- AA-Omniscience · Non-hallucinationGLM-4.5 by 12.129.917.8+12.1
Other results9 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.
- τ²-Bench Telecom (AA run)GPT-5 by 41.84384.8+41.8
- AA-OmniscienceGPT-5 by 18.7-27.4-8.7+18.7
- Artificial Analysis Coding IndexGPT-5 by 11.526.337.8+11.5
- LiveCodeBenchGPT-5 by 10.672.983.5+10.6
- AA Agentic IndexGPT-5 by 10.316.226.5+10.3
- AA IntelligenceGPT-5 by 10.212.823+10.2
- Terminal-BenchGPT-5 by 6.337.543.8+6.3
- MMLU-ProGPT-5 by 2.584.687.1+2.5
- AIME 2025GPT-5 by 1.393.394.6+1.3
Questions people ask
Which is better, GLM-4.5 or GPT-5?
GPT-5 wins five of the six areas where both have results: coding, agents, reasoning, long documents and following instructions. GLM-4.5 wins none, but costs 75% less. They are level on facts.
Which is better for coding?
GPT-5. It wins 3 of the 3 coding tests both models report; GLM-4.5 wins none.
Which is cheaper?
GLM-4.5 costs $0.60 per million input tokens and $2.20 per million output tokens; GPT-5 costs $1.25 and $10.00. That makes GLM-4.5 about 75% cheaper for the same work.
How do you compare the two?
We use the 21 benchmark tests both models have published scores on. The verdict counts the 12 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 9 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.