token.app › Compare › o3 Mini vs GLM 5.2
o3 Mini vs GLM 5.2
GLM 5.2 leads on 4 of 4 shared benchmarks. GLM 5.2 is 5.0× cheaper per token on a blended 3:1 basis. GLM 5.2 accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| o3 Mini | GLM 5.2 | |
|---|---|---|
| Provider | OpenAI | Zhipu AI |
| Input $/1M | $1.10 | $0.252 |
| Output $/1M | $4.40 | $0.792 |
| Blended $/1M | $1.93 | $0.387 |
| Context window | 200K | 1.0M |
| Max output | 100K | 128K |
| Released | Jan 2025 | Jun 2026 |
| Licence | Proprietary | Open weights |
| GPQA Diamond | 77.0% | 91.9% |
| FrontierMath T1–3 | 18.6% | 59.2% |
| FrontierMath T4 | 0.0% | 29.3% |
| OTIS Mock AIME | 76.9% | 86.4% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose o3 Mini if…
- No clear advantage on the data we hold.
Choose GLM 5.2 if…
- Costs less per token — $0.387 vs $1.93 blended
- Higher GPQA Diamond (91.9% vs 77.0%)
- Higher FrontierMath T1–3 (59.2% vs 18.6%)
- Higher FrontierMath T4 (29.3% vs 0.0%)
- Higher OTIS Mock AIME (86.4% vs 76.9%)
- Larger context window (1.0M)
- Open weights — self-hostable
- Newer model (released Jun 2026)
FAQ
Which is better, o3 Mini or GLM 5.2?
Across the 4 benchmarks both models have independently-run scores for, o3 Mini leads on 0 and GLM 5.2 leads on 4. Benchmarks are one input — price and context window are on this page too.
Is o3 Mini cheaper than GLM 5.2?
GLM 5.2 is cheaper: $0.387 versus $1.93 per million tokens blended at 3:1 input:output. Input alone: $1.10 vs $0.252. Output alone: $4.40 vs $0.792.
What context windows do o3 Mini and GLM 5.2 have?
o3 Mini: 200,000 tokens. GLM 5.2: 1,048,576 tokens.
Who makes o3 Mini and GLM 5.2?
o3 Mini is made by OpenAI. GLM 5.2 is made by Zhipu AI.