AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — Mistral AI
Mistral Medium 3.5 is a dense 128B-parameter model from Mistral AI, released on April 28, 2026, that combines instruction-following, reasoning and coding in a single set of weights, with image input and configurable reasoning effort. Mistral made it the default model in Le Chat and Mistral Vibe.
Model B — StepFun
Step 3.7 Flash is StepFun's open-weight vision-language Mixture-of-Experts model, 198B parameters with about 11B active per token, built for high-throughput agent workloads. It supports a 256k context and three reasoning levels.
| Property | Mistral Medium 3.5 | Step 3.7 Flash |
|---|---|---|
| Released | Apr 28, 2026 | May 29, 2026 |
| Developer | Mistral AI | StepFun |
| Type | multimodal | multimodal |
| License | open-weight | open-weight |
| Context window | — | — |
| Parameters | 128B (dense) | 198B total (196B language backbone + 1.8B vision encoder), about 11B activated per token |
| Developer status | — | — |
| Input $/M tokens | $1.50 | $0.20 |
| Output $/M tokens | $7.50 | $1.15 |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
Programmatic access available at /api/ai/compare?a=mistral-medium-3-5&b=step-3-7-flash. CORS is open. Citation guidance: /about/editorial-process.