Head-to-head · Google vs Mistral AI
Gemini 3.1 Pro vs Mistral Large 3
Quick answer: Gemini 3.1 Pro stands out for strong multimodal coverage. Mistral Large 3 stands out for open weights with a permissive license, and it has a free tier. Reviewed September 2026.
Overview
Gemini 3.1 Pro: Gemini 3.1 Pro, released by Google in February 2026, is a multimodal model with strong agentic capabilities. It is listed at $2 and $12 per million tokens for prompts up to 200,000 tokens ($4 and $18 above that) and is offered in preview on the Gemini API.
Mistral Large 3: Mistral Large 3, released in December 2025, is Mistral AI's largest public model, a mixture-of-experts system with 675 billion total parameters of which about 41 billion are active. It is released under the Apache 2.0 license, so organizations can download and self-host it.
At a glance
| Dimension | Gemini 3.1 Pro | Mistral Large 3 |
|---|---|---|
| Vendor | Mistral AI | |
| Starting price | API: $2 in / $12 out per M tokens | Open weights; API $0.50 in / $1.50 out per M tokens |
| Pricing model | Paid | Free |
| Free tier | No | Yes |
| Category | Generative AI | Generative AI |
Strengths and limits
Gemini 3.1 Pro
- Strong multimodal coverage
- Deep Google ecosystem integration
- Competitive price for a Pro-tier model
Watch out for
- Listed as a preview model on the pricing page
- Google has said Gemini 4 is coming
- Output style can vary between interfaces
Mistral Large 3
- Open weights with a permissive license
- No per-token fee when self-hosted
- European vendor with strong data-residency appeal
Watch out for
- Requires serious hardware to self-host
- Trails the newest frontier models on the hardest tasks
- Smaller tooling ecosystem than the largest vendors
Key features
Gemini 3.1 Pro
- Multimodal understanding across text, images, audio and video
- Agentic and tool-use capabilities
- Tiered pricing for prompts over 200,000 tokens
- Available through the Gemini API and Google Cloud
Mistral Large 3
- Mixture-of-experts architecture
- Apache 2.0 open-weight license
- Self-hostable for data-sensitive work
- Available through Mistral's platform and partners
Pricing compared
Gemini 3.1 Pro is priced by usage rather than by seat: API: $2 in / $12 out per M tokens. That means cost scales with how much text you send and receive, so estimate your monthly volume before committing.
Mistral Large 3 is free to use (Open weights; API $0.50 in / $1.50 out per M tokens). Check the vendor's page for any usage limits or paid support options.
Frequently asked questions
Which is better, Gemini 3.1 Pro or Mistral Large 3?
It depends on the work. Gemini 3.1 Pro stands out for strong multimodal coverage. Mistral Large 3 stands out for open weights with a permissive license, and it has a free tier.
How do Gemini 3.1 Pro and Mistral Large 3 compare on price?
Gemini 3.1 Pro is priced by usage rather than by seat: API: $2 in / $12 out per M tokens. That means cost scales with how much text you send and receive, so estimate your monthly volume before committing. Mistral Large 3 is free to use (Open weights; API $0.50 in / $1.50 out per M tokens). Check the vendor's page for any usage limits or paid support options.
Is there a free option between Gemini 3.1 Pro and Mistral Large 3?
Mistral Large 3 offers a free tier or free access, so you can test on real work before paying.