Model vs model
Gemini 4 Hydrogen vs Mistral Medium 3.5
At a glance
Longer bar means the bigger number.
Open or closed · can you download the model and run it yourself?
Context window · tokens it can read at once
Where they sit among all 45 models
Mistral Medium 3.5 ranks 33rd of the 40 models with an Intelligence Index. Up and to the left is smarter for less money. Hover or tap a dot for its numbers, then click it to compare that model with Gemini 4 Hydrogen.
Which one to pick
Pick Gemini 4 Hydrogen if
- you need a longer context window (1.05M vs 262K tokens)
- you need to send video and audio
Pick Mistral Medium 3.5 if
- you want open weights you can download and run yourself
How smart is each one?
Every intelligence score we have
Out of 100, higher is better. Gemini 4 Hydrogen Mistral Medium 3.5
Gemini 4 Hydrogen has no Artificial Analysis scores yet, so only our own tests compare them.
Overall
Intelligence Index
14.2
By area
Coding
46.9Agentic work
7
By field of work
Finance & accounting
14Legal
16.1Healthcare & medicine
14.8Economics
20.4Engineering
17.3Strategy & operations
11.9
Benchmarks
Hard reasoning · Humanity's Last Exam
13.8Science · GPQA Diamond
74.8Scientific coding · SciCode
40.2Terminal tasks · Terminal-Bench 4.0
0Tool use · τ-Bench Banking
15.1Instruction following · IFBench
68.8Long documents · AA-LCR
69.3Uncensored · UGI
49.9
The specs
| Spec | Gemini 4 Hydrogen | Mistral Medium 3.5 |
|---|---|---|
| Input price | $1.50 per 1M | $1.50 per 1M |
| Output price | $7.50 per 1M | $7.50 per 1M |
| Cost per test task | Not tested | $0.5020 |
| Context window | 1.05M | 262K |
| Max output | 66K | 262K |
| Accepts | Text, Image, Video, Audio, PDF | Text, Image, PDF |
| Open weights | No | Yes |
| Lab | Mistral AI | |
| Released | Nov 2026 | Apr 2026 |
| Knowledge cutoff | Mar 2026 | Not published |
Blended price weighs 3 parts input to 1 part output. List prices from models.dev. Cost per test task from Artificial Analysis.
Questions
Is Gemini 4 Hydrogen or Mistral Medium 3.5 cheaper?
They cost the same, $3 per 1M tokens blended.
Are Gemini 4 Hydrogen and Mistral Medium 3.5 open source?
Only Mistral Medium 3.5. It is an open-weights model: Mistral AI publishes the weights, so you can download it, run it on your own hardware or pick any host. Gemini 4 Hydrogen is closed: you can only use it through an API.
Which has the longer context window?
Gemini 4 Hydrogen accepts 1.05M tokens, against 262K for Mistral Medium 3.5.
Can I compare Gemini 4 Hydrogen and Mistral Medium 3.5 on my own prompt?
Yes. ModelCompare sends one prompt to both models at once and shows each answer side by side with what it cost. You can try it free without an account.
Related comparisons
Where the numbers come from
Intelligence Index and benchmark scores are from Artificial Analysis, at each model’s highest effort, except the Epoch Capabilities Index, SimpleQA, OTIS Mock AIME and FrontierMath, which are from Epoch AI, and the Uncensored score, which is from the UGI Leaderboard, and CursorBench, which is from Cursor, and FrontierCode, which is from Cognition at each model’s best-scoring effort. The hallucination test is ours: questions with one exact answer, fake evidence pushed against right answers and requests that tempt a model to name packages that don’t exist. Prices are list prices from models.dev. Example answers come from our own test runs. Updated November 13, 2026.