Mistral: Mistral Small 4

Mistral: Mistral Small 4 is a large language model API from Mistral AI, part of its Mistral Small model family. At $0.150 per million input tokens and $0.600 per million output tokens, it sits in the budget tier — among the cheaper options for high-throughput or cost-sensitive workloads. Output tokens cost about 4× as much as input, so prompt-heavy workloads run noticeably cheaper than generation-heavy ones. A large 262K-token context window (≈393 pages of text) lets it take in whole books, large codebases, or lengthy transcripts in a single call. Beyond plain text it also accepts Image input, so it can be applied to multimodal tasks rather than text alone. On Artificial Analysis's Intelligence Index it scores 21 (D grade), a useful proxy for its general reasoning strength relative to the other models tracked here. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

• Mistral: Mistral Small 4 Input price: $0.15/M tokens
• Mistral: Mistral Small 4 Output price: $0.6/M tokens
• Context window: 262,144 tokens
• Provider: Mistral AI
• Model family: Mistral Small
• Modalities: Text, Image
• Data source: OpenRouter, updated daily