Model Comparison

Gemini 3 Flash vs Mistral Medium 3.5Which is better in 2026?

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is 2.7x cheaper per token.

Verdict: Gemini 3 Flash vs Mistral Medium 3.5 — which is better?

Gemini 3 Flash (by Google) and Mistral Medium 3.5 (by Mistral AI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Gemini 3 Flash outperforms in 2 benchmarks (AIME 2025, SWE-Bench Verified), while Mistral Medium 3.5 is better at 0 benchmarks. Gemini 3 Flash significantly outperforms across most benchmarks.

On price, Gemini 3 Flash is roughly 2.7x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3 Flash also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3 Flash if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • cost matters — it's about 2.7x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window

Choose Mistral Medium 3.5 if…

  • you want the most recent training data — it shipped Apr 2026
  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Gemini 3 Flash outperforms in 2 benchmarks (AIME 2025, SWE-Bench Verified), while Mistral Medium 3.5 is better at 0 benchmarks.

Gemini 3 Flash significantly outperforms across most benchmarks.

Tue Jun 09 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 3 Flash costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 3.0x cheaper than Mistral Medium 3.5 ($1.50/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 2.5x cheaper than Mistral Medium 3.5 ($7.50/1M tokens).

In conclusion, Mistral Medium 3.5 is more expensive than Gemini 3 Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Tue Jun 09 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
Mistral AI
Mistral Medium 3.5
Input tokens$1.50
Output tokens$7.50
Best providerMistral
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3 Flash accepts 1,000,000 input tokens compared to Mistral Medium 3.5's 256,000 tokens. Mistral Medium 3.5 can generate longer responses up to 256,000 tokens, while Gemini 3 Flash is limited to 65,536 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
Mistral AI
Mistral Medium 3.5
Input256,000 tokens
Output256,000 tokens
Tue Jun 09 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and Mistral Medium 3.5 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 3 Flash

Text
Images
Audio
Video

Mistral Medium 3.5

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 3 Flash is licensed under a proprietary license, while Mistral Medium 3.5 uses Modified MIT License.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini 3 Flash

Proprietary

Closed source

Mistral Medium 3.5

Modified MIT License

Open weights

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while Mistral Medium 3.5 was released on 2026-04-29.

Mistral Medium 3.5 is 4 months newer than Gemini 3 Flash.

Gemini 3 Flash

Dec 17, 2025

5 months ago

Mistral Medium 3.5

Apr 29, 2026

1 months ago

4mo newer

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a documented knowledge cutoff of 2025-01-31, while Mistral Medium 3.5's cutoff date is not specified.

We can confirm Gemini 3 Flash's training data extends to 2025-01-31, but cannot make a direct comparison without Mistral Medium 3.5's cutoff date.

Gemini 3 Flash

Jan 2025

Mistral Medium 3.5

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Provider Availability

Gemini 3 Flash is available from Google. Mistral Medium 3.5 is available from Mistral AI.

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M

Mistral Medium 3.5

mistral logo
Mistral
Input Price:Input: $1.50/1MOutput Price:Output: $7.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,000,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher AIME 2025 score (99.7% vs 86.3%)
Higher SWE-Bench Verified score (78.0% vs 77.6%)
Mistral AI
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
Mistral AI
Mistral Medium 3.5

FAQ

Common questions about Gemini 3 Flash vs Mistral Medium 3.5.

Which is better, Gemini 3 Flash or Mistral Medium 3.5?

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is made by Google and Mistral Medium 3.5 is made by Mistral AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3 Flash compare to Mistral Medium 3.5 in benchmarks?

Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. Mistral Medium 3.5 scores COLLIE: 95.8%, Tau3 Telecom: 91.4%, AIME 2025: 86.3%, SWE-Bench Verified: 77.6%, Tau3 Retail: 76.1%.

Is Gemini 3 Flash cheaper than Mistral Medium 3.5?

Gemini 3 Flash is 3.0x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. Mistral Medium 3.5 costs $1.50/M input and $7.50/M output via mistral.

What are the context window sizes for Gemini 3 Flash and Mistral Medium 3.5?

Gemini 3 Flash supports 1.0M tokens and Mistral Medium 3.5 supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3 Flash and Mistral Medium 3.5?

Key differences include context window (1.0M vs 256K), input pricing ($0.50 vs $1.50/M), licensing (Proprietary vs Modified MIT License). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Flash and Mistral Medium 3.5?

Gemini 3 Flash is developed by Google and Mistral Medium 3.5 is developed by Mistral AI.

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