DeepSeek V3.1 vs Mistral Medium 3.5
| Signal | DeepSeek V3.1 | Delta | Mistral Medium 3.5 |
|---|---|---|---|
Capabilities | 67 | -17 | |
Benchmarks | 69 | -1 | |
Pricing | 99 | +7 | |
Context window size | 75 | -3 | |
Recency | 73 | -27 | |
Output Capacity | 75 | +55 | |
| Overall Result | 2 wins | of 6 | 4 wins |
Score History
71.4
current score
DeepSeek V3.1
right now
71.3
current score
DeepSeek V3.1
DeepSeek
Mistral Medium 3.5
Mistral AI
DeepSeek V3.1 saves you $452.50/month
That's $5430.00/year compared to Mistral Medium 3.5 at your current usage level of 100K calls/month.
| Metric | DeepSeek V3.1 | Mistral Medium 3.5 | Winner |
|---|---|---|---|
| Overall Score | 71 | 71 | DeepSeek V3.1 |
| Rank | #103 | #105 | DeepSeek V3.1 |
| Quality Rank | #103 | #105 | DeepSeek V3.1 |
| Adoption Rank | #103 | #105 | DeepSeek V3.1 |
| Parameters | -- | -- | -- |
| Context Window | 164K | 262K | Mistral Medium 3.5 |
| Pricing | $0.25/$0.95/M | $1.50/$7.50/M | -- |
| Signal Scores | |||
| Capabilities | 67 | 83 | Mistral Medium 3.5 |
| Benchmarks | 69 | 70 | Mistral Medium 3.5 |
| Pricing | 99 | 93 | DeepSeek V3.1 |
| Context window size | 75 | 77 | Mistral Medium 3.5 |
| Recency | 73 | 100 | Mistral Medium 3.5 |
| Output Capacity | 75 | 20 | DeepSeek V3.1 |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 71/100 (rank #103), placing it in the top 65% of all 290 models tracked.
Scores 71/100 (rank #105), placing it in the top 64% of all 290 models tracked.
With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.
Choose DeepSeek V3.1 when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
- Self-hosted deployments where you need full control over the model
Choose Mistral Medium 3.5 when you need:
- Processing long documents or large codebases (262K token context)
- Multimodal workflows that require image understanding
- Step-by-step reasoning and chain-of-thought problem solving
DeepSeek V3.1 offers 87% better value per quality point. At 1M tokens/day, you'd spend $18.00/month with DeepSeek V3.1 vs $135.00/month with Mistral Medium 3.5 - a $117.00 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. DeepSeek V3.1 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (262K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.95/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (71/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
DeepSeek V3.1 and Mistral Medium 3.5 are extremely close in overall performance (only 0.10000000000000853 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.
By Use Case
Best for Quality
DeepSeek V3.1
Marginally better benchmark scores; both are excellent
Best for Cost
DeepSeek V3.1
87% lower pricing; better value at scale
Best for Reliability
DeepSeek V3.1
Higher uptime and faster response speeds
Best for Prototyping
DeepSeek V3.1
Stronger community support and better developer experience
Best for Production
DeepSeek V3.1
Wider enterprise adoption and proven at scale
by DeepSeek
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Cost - 87% lower pricing; better value at scale
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | DeepSeek V3.1 | Mistral Medium 3.5 |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
DeepSeek V3.1
DeepSeek
Mistral Medium 3.5
Mistral AI
DeepSeek V3.1 saves you $10.11/month
That's 86% cheaper than Mistral Medium 3.5 at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | DeepSeek V3.1 | Mistral Medium 3.5 |
|---|---|---|
| Context Window | 164K | 262K |
| Max Output Tokens | 32,768 | -- |
| Open Source | Yes | No |
| Created | Aug 21, 2025 | Apr 30, 2026 |