Mistral Medium 3.5 vs GPT-5.5
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
Mistral Medium 3.5
B
GPT-5.5
- ProviderMistral AIOpenAI
- Rank#27#23Higher rank
- TierAA
- Score83.684.0Higher score
- PriceOpen weights (Modified MIT); API $1.50 input / $7.50 output per 1M tokens via MistralLower price tierAPI $5 input / $30 output per 1M tokens
- TaglineFrontier-class multimodal model from Mistral optimized for agentic and coding use cases.OpenAI's April 2026 flagship for complex professional and agentic coding work, since followed by the GPT-5.6 family (July 2026) and GPT-6 Astra (September 2026).
| Attribute | Mistral Medium 3.5 | GPT-5.5 |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Rank | #27 | #23Higher rank |
| Tier | A | A |
| Score | 83.6 | 84.0Higher score |
| Price | Open weights (Modified MIT); API $1.50 input / $7.50 output per 1M tokens via MistralLower price tier | API $5 input / $30 output per 1M tokens |
| Tagline | Frontier-class multimodal model from Mistral optimized for agentic and coding use cases. | OpenAI's April 2026 flagship for complex professional and agentic coding work, since followed by the GPT-5.6 family (July 2026) and GPT-6 Astra (September 2026). |