Compare · ModelsLive · 2 picked · head to head
GLM 4.5 vs gpt-oss-120b (free)
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
gpt-oss-120b (free) wins on 4/6 benchmarks
gpt-oss-120b (free) wins 4 of 6 shared benchmarks. Leads in math · language · coding.
Category leads
math·gpt-oss-120b (free)knowledge·GLM 4.5language·gpt-oss-120b (free)coding·gpt-oss-120b (free)
Hype vs Reality
Attention vs performance
GLM 4.5
#23 by perf·no signal
gpt-oss-120b (free)
#26 by perf·no signal
Vendor risk
Who is behind the model
z-ai
private · undisclosed
OpenAI
$840.0B·Tier 1
Head to head
6 benchmarks · 2 models
GLM 4.5gpt-oss-120b (free)
OpenCompass · AIME2025
gpt-oss-120b (free) leads by +7.6
GLM 4.5
85.8
gpt-oss-120b (free)
93.4
OpenCompass · GPQA-Diamond
GLM 4.5 leads by +0.6
GLM 4.5
79.5
gpt-oss-120b (free)
78.9
OpenCompass · HLE
gpt-oss-120b (free) leads by +1.4
GLM 4.5
16.9
gpt-oss-120b (free)
18.3
OpenCompass · IFEval
gpt-oss-120b (free) leads by +4.8
GLM 4.5
85.4
gpt-oss-120b (free)
90.2
OpenCompass · LiveCodeBenchV6
gpt-oss-120b (free) leads by +13.4
GLM 4.5
65.0
gpt-oss-120b (free)
78.4
OpenCompass · MMLU-Pro
GLM 4.5 leads by +3.0
GLM 4.5
82.7
gpt-oss-120b (free)
79.7
Full benchmark table
| Benchmark | GLM 4.5 | gpt-oss-120b (free) |
|---|---|---|
OpenCompass · AIME2025 | 85.8 | 93.4 |
OpenCompass · GPQA-Diamond | 79.5 | 78.9 |
OpenCompass · HLE | 16.9 | 18.3 |
OpenCompass · IFEval | 85.4 | 90.2 |
OpenCompass · LiveCodeBenchV6 | 65.0 | 78.4 |
OpenCompass · MMLU-Pro | 82.7 | 79.7 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.60 | $2.20 | 131K tokens (~66 books) | $10.00 | |
| $0.00 | $0.00 | 131K tokens (~66 books) | — |