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GPT 6 Luna Pro vs Mistral Medium 3.1

At a glance

OpenAI's GPT-6 Luna served in pro reasoning mode for the hardest problems.

1.1M ctx$0.10/$0.50 per M

Updated enterprise-grade model delivering frontier performance at lower cost.

131K ctx$0.40/$2.00 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper75%
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
1.1M
Context
128K
Max output
Sep 2026
Released
131K
Context
105K
Max output
Aug 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input75%$0.10/M tokens
Output75%$0.50/M tokens
Cache read75%$0.01/M tokens
Cache write$0.13/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$0.40/M tokens
Output$2.00/M tokens
Cache read$0.04/M tokens
Chat with GPT 6 Luna ProGo to model
Chat with Mistral Medium 3.1Go to model
Frequently Asked Questions: GPT 6 Luna Pro vs Mistral Medium 3.1▼

Which is better, GPT 6 Luna Pro or Mistral Medium 3.1?

▼

Both GPT 6 Luna Pro and Mistral Medium 3.1 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, GPT 6 Luna Pro or Mistral Medium 3.1?

▼

GPT 6 Luna Pro has a lower blended cost. GPT 6 Luna Pro: $0.10 input / $0.50 output. Mistral Medium 3.1: $0.40 input / $2.00 output.

Which has a larger context window, GPT 6 Luna Pro or Mistral Medium 3.1?

▼

GPT 6 Luna Pro has a larger context window: GPT 6 Luna Pro supports 1.1M tokens vs Mistral Medium 3.1 at 131K tokens.

Do both GPT 6 Luna Pro and Mistral Medium 3.1 support vision?

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Yes, both GPT 6 Luna Pro and Mistral Medium 3.1 support vision/image input.

What are the key differences between GPT 6 Luna Pro and Mistral Medium 3.1?

▼

Key differences: GPT 6 Luna Pro is significantly cheaper; only GPT 6 Luna Pro offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GPT 6 Luna Pro and Mistral Medium 3.1 for free on idapt.app to see which performs better for your specific needs.

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