GPT-4.1 Nano is cheaper than Mistral Small 4 at $0.1/M vs $0.15/M input tokens.
| Spec | GPT-4.1 Nano | Mistral Small 4 |
|---|---|---|
| Input price | $0.1/M tokens | $0.15/M tokens |
| Output price | $0.4/M tokens | $0.6/M tokens |
| Context window | 1.0M tokens | 262K tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | Apr 2025 | Mar 2026 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-4.1 Nano is cheaper on both: 1.5× input, 1.5× output.
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
Mistral Small 4 uses 19.0x more emoji