OpenAI o4-mini high vs GLM-5.3 Marathon
Both have similar output pricing, while GLM-5.3 Marathon offers a larger context window. Choose OpenAI o4-mini high or GLM-5.3 Marathon based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | OpenAI o4-mini high | GLM-5.3 Marathon |
|---|---|---|
| Provider | NanoGPT | 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 2025 | Aug 2026 |
| Aider Polyglot score | 72.0 | — |
FAQ
Is OpenAI o4-mini high or GLM-5.3 Marathon cheaper?
OpenAI o4-mini high and GLM-5.3 Marathon have comparable output pricing.
Which has the larger context window, OpenAI o4-mini high 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.