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Devstral 2 vs Mistral Medium 3.5

Devstral 2 vs Mistral Medium 3.5: Devstral 2 is cheaper for input-heavy usage ($0.40/M vs $1.50/M input tokens), while Devstral 2 is better for long-context tasks (262,144 tokens).

Direct answer: choose Devstral 2 for lower token spend and choose Devstral 2 when your workload needs longer context.

Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.

Mistral AI
Devstral 2
vs
Mistral AI
Mistral Medium 3.5

Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

Devstral 2

Per Request:$0.001400
Daily:$0.14
Monthly:$4.20
Yearly:$51.10

Mistral Medium 3.5

Per Request:$0.005250
Daily:$0.525
Monthly:$15.75
Yearly:$191.625

Cost Differences

+$0.003850
Per Request
+$0.385
Daily
+$11.55
Monthly
+$140.525
Yearly

Mistral Medium 3.5 costs more than Devstral 2

Quick Recommendation

Winner for direct API pricing: Devstral 2. At the default workload, Devstral 2 saves about $11.55/month ($140.525/year) versus Mistral Medium 3.5.

Feature Comparison

FeatureDevstral 2Mistral Medium 3.5
ProviderMistral AIMistral AI
Input Price$0.40/1M tokens$1.50/1M tokens
Output Price$2.00/1M tokens$7.50/1M tokens
Context Window262,144 tokens256,000 tokens
Max Output32,768 tokens32,768 tokens
Categoryefficientflagship
Capabilities
textcode
textvisioncodereasoning
Release Date12/9/20254/29/2026

Devstral 2 vs Mistral Medium 3.5: Which Should You Choose?

Choosing between Devstral 2 and Mistral Medium 3.5 depends on your priorities: cost efficiency, context length, or raw capability. Devstral 2 is the more affordable option at $0.40/1M input tokens73% cheaper than Mistral Medium 3.5. Meanwhile, Devstral 2 offers a significantly larger context window at 262,144 tokens vs 256,000 for Mistral Medium 3.5.

These models target different tiers: Devstral 2 is a efficient model while Mistral Medium 3.5 is flagship. This means they're optimized for different workloads. Mistral Medium 3.5 targets more demanding workloads, while Devstral 2 provides a cost-effective option for everyday tasks.

Output costs matter too. Devstral 2 charges $2.00/1M output tokens vs $7.50 for Mistral Medium 3.5. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Devstral 2 has the edge here at $2.00/1M output tokens.

Multimodal capabilities: Mistral Medium 3.5 supports vision (image inputs) while Devstral 2 is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose Devstral 2 when:

  • • Budget is a primary concern
  • • You need a larger context window (262,144 tokens)
  • • You're already using Mistral AI's API ecosystem
  • • You're running high-volume, latency-sensitive workloads

Choose Mistral Medium 3.5 when:

  • • You need more capabilities (vision, reasoning)
  • • You're already using Mistral AI's API ecosystem

Pros and Caveats at a Glance

Devstral 2

  • Input pricing: $0.40/M tokens
  • Output pricing: $2.00/M tokens
  • Context window: 262,144 tokens
  • Max output: 32,768 tokens

Watch out for

  • Trade-offs are minor in this matchup.

Mistral Medium 3.5

  • Input pricing: $1.50/M tokens
  • Output pricing: $7.50/M tokens
  • Context window: 256,000 tokens
  • Max output: 32,768 tokens

Watch out for

  • Higher input cost than Devstral 2
  • Higher output cost than Devstral 2
  • Smaller context window than Devstral 2

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

Devstral 2 (Mistral AI)

Mistral Medium 3.5 (Mistral AI)

Start using Devstral 2 today

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Start using Mistral Medium 3.5 today

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Frequently Asked Questions

Which is cheaper, Devstral 2 or Mistral Medium 3.5?
Devstral 2 is cheaper for input tokens at $0.40 per million tokens vs $1.50 for Mistral Medium 3.5 — that's 73% savings on input costs.
What is the context window difference between Devstral 2 and Mistral Medium 3.5?
Devstral 2 supports 262,144 tokens while Mistral Medium 3.5 supports 256,000 tokens — a difference of 6,144 tokens in favor of Devstral 2.
Which model is better for AI Chatbot?
Both models support text. For ai chatbot, Devstral 2 is the lower-cost option, while Devstral 2 offers a larger context window (262,144 vs 256,000 tokens). Choose Devstral 2 for budget sensitivity or Devstral 2 for longer context tasks.
Which model has better overall pricing for heavy usage?
At 100 requests/day with 1,000 input and 500 output tokens each, Devstral 2 costs about $4.20/month and Mistral Medium 3.5 costs about $15.75/month. Overall, Devstral 2 has lower combined input + output rates ($0.40 in, $2.00 out) vs Mistral Medium 3.5.

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