o3 Mini vs GLM-5.3 Marathon
Both have similar output pricing, while GLM-5.3 Marathon offers a larger context window. Choose o3 Mini or GLM-5.3 Marathon based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | o3 Mini | GLM-5.3 Marathon |
|---|---|---|
| Provider | OpenAI | Subconscious |
| Input / 1M tokens | $1.10 | $1.40 |
| Output / 1M tokens | $4.40 | $4.40 |
| Context window | 200K | 5M |
| Parameters | — | — |
| Open weights | No | Yes |
| Released | Dec 2024 | Aug 2026 |
| SWE-bench Verified score | 42.4 | — |
| Aider Polyglot score | 60.4 | — |
| LMArena (Chatbot Arena) Elo score | 1337 | — |
| GPQA Diamond score | 77.0 | — |
| FrontierMath score | 12.4 | — |
| Epoch Capabilities Index score | 140 | — |
FAQ
Is o3 Mini or GLM-5.3 Marathon cheaper?
o3 Mini and GLM-5.3 Marathon have comparable output pricing.
Which has the larger context window, o3 Mini or GLM-5.3 Marathon?
GLM-5.3 Marathon has the larger context window (5M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.