Mistral Medium 3.1 vs Sonar Reasoning Pro (Comparative Analysis)
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Comparative Analysis: Mistral Medium 3.1 vs. Sonar Reasoning Pro
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Overview
Sonar Reasoning Pro was released 5 months before Mistral Medium 3.1.
 Mistral Medium 3.1 |  Sonar Reasoning Pro | |
|---|---|---|
Model Provider The organization behind this AI's development | Mistral | Perplexity |
Input Context Window Maximum input tokens this model can process at once | 131.1K tokens | 128K tokens |
Output Token Limit Maximum output tokens this model can generate at once | Not specified tokens | Not specified tokens |
Release Date When this model first became publicly available | August 13, 2025 1 year ago August 13th, 2025 | March 7, 2025 1 year ago March 7th, 2025 |
Knowledge Cutoff Latest training-data date reported by the provider | June 30, 2025 | Not reported |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Mistral Medium 3.1 | Sonar Reasoning Pro | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image📁File | 📝Text🖼️Image |
Reasoning Controls Defaults and configurable reasoning effort | Not reported | Optional |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Mistral | Other |
Key Features Advanced capabilities | ✓Function Calling✓Structured OutputReasoning ModeContent Moderation | Function CallingStructured Output✓Reasoning ModeContent Moderation |
Pricing
Mistral Medium 3.1 is roughly 0.2x less expensive compared to Sonar Reasoning Pro for input tokens and roughly 0.3x less expensive for output tokens.
| Mistral Medium 3.1 | Sonar Reasoning Pro | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.40 per million tokens | $2.00 per million tokens |
Output Token Cost Cost per million output tokens | $2.00 per million tokens | $8.00 per million tokens |
Web Search Cost Additional cost for each web search operation | Not specified | $0.005 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.04 per million tokens | Not specified |
Benchmarks
Compare relevant benchmarks between Mistral Medium 3.1 and Sonar Reasoning Pro.
| Mistral Medium 3.1 | Sonar Reasoning Pro | |
|---|---|---|
Intelligence Index Overall model quality across independent evaluations | 14.7 (Artificial Analysis index; higher is better) | Benchmark not available. |
Coding Index Programming performance across independent evaluations | 20.5 (Artificial Analysis index; higher is better) | Benchmark not available. |
Agentic Index Ability to complete multi-step agentic tasks | 6.1 (Artificial Analysis index; higher is better) | Benchmark not available. |
Best Design Arena Score Highest human-preference Elo score across design arenas | 1,172 Elo (#64 in Data Viz (47.3% win rate)) | Benchmark not available. |
At a Glance
Quick overview of what makes Mistral Medium 3.1 and Sonar Reasoning Pro unique.
Mistral Medium 3.1 by Mistral understands both text and images, can use external tools and APIs, generates structured data. It can handle standard conversations with its 131.1K token context window. Reasonably priced at $0.40/M input and $2.00/M output tokens. Released August 13th, 2025.Sonar Reasoning Pro by Perplexity understands both text and images, offers advanced reasoning. It can handle standard conversations with its 128K token context window. Reasonably priced at $2.00/M input and $8.00/M output tokens. Released March 7th, 2025.Explore More Comparisons
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