Mistral Small 4 (Reasoning) Intelligence, Performance & Price Analysis
Model summary
Intelligence
Artificial Analysis Intelligence Index
Speed
Output tokens per second
Input Price
USD per 1M tokens
Output Price
USD per 1M tokens
Verbosity
Output tokens from Intelligence Index
Metrics are compared against models of the same class:
- Non-reasoning models → compared only with other non-reasoning models
- Reasoning models → compared across both reasoning and non-reasoning
- Open weights models → compared only with other open weights models of the same size class:
- Tiny: ≤4B parameters
- Small: 4B–40B parameters
- Medium: 40B–150B parameters
- Large: >150B parameters
- Proprietary models → compared across proprietary and open weights models of the same price range, using a blended 3:1 input/output price ratio:
- <$0.15 per 1M tokens
- $0.15–$1 per 1M tokens
- >$1 per 1M tokens
| Reasoning | Yes This page shows the reasoning version of this model. A non-reasoning variant may also exist. |
|---|---|
| Input modality | Supports: text, image |
| Output modality | Supports: text |
| Context window | 256k ~384 A4 pages of size 12 Arial font |
| Total parameters | 119B |
| Active parameters | 6.5B Number of parameters active per token during inference |
| License | Apache 2.0 |
| Model weights | Hugging Face |
Mistral Small 4 (Reasoning) is amongst the leading models in intelligence and reasonably priced when comparing to other open weight models of similar size. It's also notably fast, however very verbose. The model supports text and image input, outputs text, and has a 256k tokens context window.
Mistral Small 4 (Reasoning) scores 27 on the Artificial Analysis Intelligence Index, placing it well above average among comparable models (averaging 15). When evaluating the Intelligence Index, it generated 52M tokens, which is very verbose in comparison to the average of 7.4M.
Pricing for Mistral Small 4 (Reasoning) is $0.15 per 1M input tokens (moderately priced, average: $0.15) and $0.60 per 1M output tokens (somewhat expensive, average: $0.57). In total, it cost $46.37 to evaluate Mistral Small 4 (Reasoning) on the Intelligence Index.
At 151 tokens per second, Mistral Small 4 (Reasoning) is notably fast (82).
Intelligence
Artificial Analysis Intelligence Index
Artificial Analysis Intelligence Index by Open Weights / Proprietary
Intelligence Evaluations
Openness
Artificial Analysis Openness Index: Results
Intelligence Index Comparisons
Intelligence vs. Price
Intelligence Index Token Use & Cost
Output Tokens Used to Run Artificial Analysis Intelligence Index
Cost to Run Artificial Analysis Intelligence Index
Context Window
Context Window
Pricing
Pricing: Input and Output Prices
Intelligence vs. Price (Log Scale)
Pricing Comparison of Mistral Small 4 (Reasoning) API Providers
Speed
Measured by Output Speed (tokens per second)
Output Speed
Output Speed vs. Price
Latency
Measured by Time (seconds) to First Token
Latency: Time To First Answer Token
End-to-End Response Time
Seconds to output 500 Tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed
End-to-End Response Time
Model Size (Open Weights Models Only)
Model Size: Total and Active Parameters
Frequently Asked Questions
Common questions about Mistral Small 4 (Reasoning)
Mistral Small 4 (Reasoning) was released on March 16, 2026.
Mistral Small 4 (Reasoning) was created by Mistral.
Mistral Small 4 (Reasoning) scores 27 on the Artificial Analysis Intelligence Index, placing it well above average among other open weight models of similar size (median: 15).
Mistral Small 4 (Reasoning) generates output at 151.2 tokens per second (based on Mistral's API), which is well above average compared to other open weight models of similar size (median: 81.9 t/s).
Mistral Small 4 (Reasoning) has a time to first token (TTFT) of 0.62s (based on Mistral's API), which is very competitive compared to other open weight models of similar size (median: 1.46s).
Mistral Small 4 (Reasoning) costs $0.15 per 1M input tokens (very competitive, median: $0.32) and $0.60 per 1M output tokens (better than average, median: $0.73), based on Mistral's API.
Mistral Small 4 (Reasoning) costs $0.15 per 1M input tokens and $0.60 per 1M output tokens (based on Mistral's API). For a blended rate (3:1 input to output ratio), this is $0.26 per 1M tokens. Pricing may vary by provider. Compare provider pricing
When evaluated on the Intelligence Index, Mistral Small 4 (Reasoning) generated 52M output tokens, which is at the higher end compared to other open weight models of similar size (median: 7.4M).
Yes, Mistral Small 4 (Reasoning) is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
Mistral Small 4 (Reasoning) supports text and image input.
Mistral Small 4 (Reasoning) supports text output.
Yes, Mistral Small 4 (Reasoning) supports image input and can analyze, describe, and answer questions about images.
Yes, Mistral Small 4 (Reasoning) is multimodal. It can process text and image input and generate text output.
Mistral Small 4 (Reasoning) has a context window of 260k tokens. This determines how much text and conversation history the model can process in a single request.
Yes, Mistral Small 4 (Reasoning) is open weights. The model weights are publicly available and can be downloaded for self-hosting.
Mistral Small 4 (Reasoning) has 119 billion parameters (6.5 billion active).
Mistral Small 4 (Reasoning) is a Mixture of Experts (MoE) model with 119 billion total parameters, but only 6.5 billion active parameters are used during inference.
Mistral Small 4 (Reasoning) is released under the Apache 2.0 license. This license allows commercial use. View license
Mistral Small 4 (Reasoning) achieves a score of 27 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
Yes, Mistral Small 4 (Reasoning) is available via API through 1 provider. Compare API providers
Mistral Small 4 (Reasoning) is available through 1 API provider. Compare providers