Mistral Small 4 vs OpenAI gpt-oss-120b
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Both cost about the same at a typical 3:1 input/output mix.
- Mistral Small 4 accepts longer prompts: 262K vs 131K tokens.
- gpt-oss-120b output costs $0.15 per 1M via Near AI, against the list price of $0.60.
- Mistral Small 4 is the newer model (released 2026-03-16).
| Mistral Small 4 | gpt-oss-120b | |
|---|---|---|
| Vendor | Mistral | OpenAI |
| Released | 2026-03-16 | 2025-08-05 |
| Input / 1M | $0.15 | $0.15 |
| Output / 1M | $0.60 | $0.60 |
| Cached input / 1M | $0.015 | $0.075 |
| Blended / 1M (3:1) | $0.262 | $0.262 |
| Context | 262K | 131K |
| Max output | 210K | 66K |
| Accepts | text, image | text |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 4 | 25 |
| Cheapest provider, output | $0.60 | $0.15 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | 1341 ±254 | not playing |
| Vendor API status | Operational | Operational |
Cost calculator
Mistral Small 4
$18.00 per month$0.60 per day
gpt-oss-120b
$18.00 per month$0.60 per day
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Mistral Small 4 with