BenchLeader

GLM-5 vs GPT-6 Astra

Verdict
  • GPT-6 Astra (max) leads on quality: 70.9 vs 59.1.
  • GLM-5 is stronger in human preference, instruction following, long context.
  • GPT-6 Astra (max) is stronger in agents & tools, coding, composite, knowledge, maths, reasoning.
  • GLM-5 is 13× cheaper ($1.55 vs $20.00 per 1M blended).
  • GLM-5 streams 2.4× faster (66 vs 27 tokens per second).
MetricGLM-5GPT-6 Astra (max)
BenchLeader Index59.170.9
Agents & tools score56.868.2
Coding score52.978.6
Composite score64.372.9
Human preference score65.6
Instruction following score70.5
Knowledge score64.380.0
Long context score64.3
Maths score53.177.2
Reasoning score51.573.6
Blended price $/M$1.55$20.00
Output speed66 tok/s27 tok/s
Time to first answer48.7 s337.3 s
Context window205k1.1M
GPQA Diamond87.8%95.8%
FrontierMath Tiers 1–393.7%
FrontierMath Tier 497.6%
OTIS Mock AIME80.0%100.0%
SWE-bench Verified (Epoch)72.1%
SimpleQA Verified75.6%
Terminal-Bench52.4%58.2%
SimpleBench53.2%
SciCode56.5%
WeirdML48.2%
APEX-Agents17.2%
FrontierCode53.3%
Epoch Capabilities Index145.9
LMArena Text1458
LMArena Hard Prompts1478
LMArena Coding1498
LMArena WebDev14361796
LMArena Agent12.5
LiveBench82.2%
LiveBench Reasoning92.7%
LiveBench Coding80.4%
LiveBench Agentic Coding57.3%
LiveBench Mathematics96.8%
LiveBench Data Analysis83.0%
LiveBench Language89.4%
AA Intelligence Index27.9
IFBench72.3%
AA-LCR75.7%
AA-Omniscience0.3
Terminal-Bench Hard43.2%
GPQA Diamond (AA)82.0%
Humanity's Last Exam (AA)29.3%
τ²-Bench Telecom (AA)98.3%
Terminal-Bench 2.1 (Vals)87.3%
Vals Index66.6
AIME 202696.7%
HMMT February 202686.4%
MathArena Apex10.9%
Kagi LLM Benchmark51.7%
ARC-AGI-144.7%97.5%
ARC-AGI-24.9%95.0%
ARC-AGI-398.6%

Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.

GLM-5 vs GPT-6 Astra: questions

Is GLM-5 better than GPT-6 Astra?
GPT-6 Astra (max) leads on quality: 70.9 vs 59.1. The BenchLeader Index combines every independent quality benchmark; GPT-6 Astra (max) is ahead overall as of 2026-09-10, but check the category scores for your use.
Is GLM-5 better than GPT-6 Astra for coding?
GPT-6 Astra scores higher in coding (79 vs 53 on the category index, where 50 is average).
Is GLM-5 better than GPT-6 Astra for agentic tasks?
GPT-6 Astra scores higher in agentic tasks (68 vs 57 on the category index, where 50 is average).
Which is cheaper, GLM-5 or GPT-6 Astra?
GLM-5 is cheaper: $1.55 against $20.00 per million tokens, blended at three input tokens per output token.
Which is faster, GLM-5 or GPT-6 Astra?
GLM-5 streams faster: 66 against 27 output tokens per second.
Which has the larger context window?
GPT-6 Astra accepts more context: 1.1M against 205k tokens.