ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Gemini 2.5 Pro vs Mistral Medium 3.5

Gemini 2.5 Pro comes out ahead, 63 to 55 on our weighted score, though Mistral Medium 3.5 is 13% cheaper per token.

  1. Our pick

    Google

    Gemini 2.5 Pro

    Released Jun 17, 2025

    63/100
    • ECI145.3
    • Price$1.25 / $10.00
    • Context1.05M
    Full specs Remove Gemini 2.5 Pro

  2. Mistral AI

    Mistral Medium 3.5

    Released Apr 29, 2026

    55/100
    • ECI141.4
    • Price$1.50 / $7.50
    • Context262K
    Full specs Remove Mistral Medium 3.5

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Gemini 2.5 Pro is our pick

Gemini 2.5 Pro is the better all-round choice, scoring 63/100 against Mistral Medium 3.5 (55). It leads on capability, inputs & features and context window. Mistral Medium 3.5 wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityGemini 2.5 ProCapabilities Index (ECI): Gemini 2.5 Pro 145.3 · Mistral Medium 3.5 141.4
  • Lowest priceMistral Medium 3.5Mistral Medium 3.5 $3.00 · Gemini 2.5 Pro $3.44 per 1M tokens (3:1 blend)
  • Longest contextGemini 2.5 ProGemini 2.5 Pro 1,048,576 · Mistral Medium 3.5 262,144 tokens
  • Widest inputsGemini 2.5 ProGemini 2.5 Pro: Text, Images, PDFs, Audio, Video · Mistral Medium 3.5: Text, Images
  • Self-hostingMistral Medium 3.5Publishes downloadable weights
How the score is built
MeasureWeightGemini 2.5 ProMistral Medium 3.5
CapabilityCapabilities Index (ECI)50%7267
Price25%2427
Inputs & features15%10070
Context window10%6137
Overall100%63/10055/100
02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Gemini 2.5 Pro vs Mistral Medium 3.5 specifications side by side
SpecificationGemini 2.5 ProGoogleMistral Medium 3.5Mistral AI
Capability
Capabilities Index (ECI)145.3 (best)141.4
ECI rank#78 of 148 (best)#95 of 148
GPQA DiamondGraduate-level science questions85.3%—
FrontierMath Tiers 1–3Research-level mathematics24.6%—
OTIS Mock AIME 2024–2025Competition mathematics84.7%—
SWE-bench VerifiedFixing real GitHub issues57.6%—
Price per million tokens
Input$1.25 (best)$1.50
Output$10.00$7.50 (best)
Cached input$0.125 (best)$0.15
Blended (3:1)$3.44$3.00 (best)
Long-context rateOver 200K: $2.50 / $15.00Same rate
Price sourceOfficial Google APIOfficial Mistral API
Limits
Context window1,048,576 tokens (best)262,144 tokens
Max output65,536 tokens262,144 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioYesNo
VideoYesNo
ReasoningYesYeshigh
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryOpen
API model IDgemini-2.5-promistral-medium-2604
API providers22 (best)12
ReleasedJun 17, 2025Apr 29, 2026
Knowledge cutoffJan 2025—
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Gemini 2.5 Pro$32.50
  • Mistral Medium 3.5$30.00
04 — Questions

Which should you choose?

Which is better: Gemini 2.5 Pro or Mistral Medium 3.5?

Gemini 2.5 Pro is the better all-round choice, scoring 63/100 against Mistral Medium 3.5 (55). It leads on capability, inputs & features and context window. Mistral Medium 3.5 wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Gemini 2.5 Pro or Mistral Medium 3.5?

Mistral Medium 3.5 is cheaper at $1.50 input / $7.50 output per million tokens (official Mistral API price). Gemini 2.5 Pro costs $1.25 input / $10.00 output per million tokens (official Google API price). At a typical mix of three input tokens to one output token, that is $3.00 per million tokens for Mistral Medium 3.5 versus $3.44 for Gemini 2.5 Pro (1.1× as much).

Which scores higher on benchmarks?

Gemini 2.5 Pro scores higher on the Capabilities Index (ECI): Gemini 2.5 Pro 145.3 (#78 of 148) and Mistral Medium 3.5 141.4 (#95 of 148). The confidence ranges of the top two overlap (143.6–146.9 vs 138.4–143.7), so treat the gap as small.

Which is better for coding?

There are no published SWE-bench Verified results for Mistral Medium 3.5 yet, so there is no like-for-like coding score. On overall capability, Gemini 2.5 Pro leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.

Which has the bigger context window?

Gemini 2.5 Pro has the largest context window at 1,048,576 tokens, against 262,144 for Mistral Medium 3.5. Maximum output per response: Gemini 2.5 Pro up to 65,536, Mistral Medium 3.5 up to 262,144 tokens.

Which can read images, PDFs, audio or video?

Gemini 2.5 Pro accepts text, images, PDFs, audio and video; Mistral Medium 3.5 accepts text and images. Gemini 2.5 Pro handles the widest range of inputs.

Are any of these open source?

Mistral Medium 3.5 publishes its weights and can be self-hosted; Gemini 2.5 Pro is proprietary.

Which is newer?

Mistral Medium 3.5 is the newest, released Apr 29, 2026. Gemini 2.5 Pro came out Jun 17, 2025. Knowledge cutoff: Gemini 2.5 Pro Jan 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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