GPT-6 Astra Pro vs Mistral Medium 3.5

Price, context window & benchmark comparison

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GPT-6 Astra Pro

OpenAI
$10.00 / $50.00
Input / Output · per 1M tokens
VS
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Mistral Medium 3.5

Mistral AI
$1.50 / $7.50
Input / Output · per 1M tokens
Compare different models
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Verdict: Mistral Medium 3.5 is 6.7× cheaper than GPT-6 Astra Pro on a typical 3:1 input/output mix. GPT-6 Astra Pro has the larger context window (1.1M vs 262K).
GPT-6 Astra ProMistral Medium 3.5
Input price / 1M$10.00$1.50
Output price / 1M$50.00$7.50
Blended price (3:1)$20.00$3.00
Cached input / 1M$1.00
Context window1.1M262K
Max output128K210K
Intelligence index14.2
Coding index46.9
Providers52
Best provider uptime (30m)99.9%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-042026-04-30
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FAQ

Which is cheaper, GPT-6 Astra Pro or Mistral Medium 3.5?

Mistral Medium 3.5 is 6.7× cheaper than GPT-6 Astra Pro on a typical 3:1 input/output mix.

GPT-6 Astra Pro vs Mistral Medium 3.5: which has a bigger context window?

GPT-6 Astra Pro: 1,050,000 tokens. Mistral Medium 3.5: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6 Astra Pro ≈ $45,000, Mistral Medium 3.5 ≈ $6,750.

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