Observed 2026-06-03 11:12. Prices are USD per 1M tokens (from OpenRouter public pricing). Input: Gemini 3.1 Pro $2 / Mistral Medium 3.5 $1.5, output: $12 / $7.5.
✓ = the mechanically better side per row (cheaper price / longer context). Magnitude only, not a rating.
| Field | Gemini 3.1 Pro google/gemini-3.1-pro-preview | Mistral Medium 3.5 mistralai/mistral-medium-3-5 |
|---|---|---|
| Input priceUSD/1M | $2 | $1.5✓ |
| Output priceUSD/1M | $12 | $7.5✓ |
| Cache readUSD/1M | $0.2 | Accumulating… |
| Context windowtokens | 1,048.576k✓ | 262.144k |
Source: OpenRouter /api/v1/models → collect_prices.py → Source(price)。 · Gemini 3.1 Pro: google/gemini-3.1-pro-preview · Mistral Medium 3.5: mistralai/mistral-medium-3-5
Aggregated observations, not predictions. Prices change (observation time noted). © TraceBottle for AI
As observed on 2026-06-03 11:12, input is Gemini 3.1 Pro $2 / Mistral Medium 3.5 $1.5 per 1M tokens — Mistral Medium 3.5 is cheaper. Output is $12 / $7.5 — Mistral Medium 3.5 is cheaper.
Gemini 3.1 Pro: 1,048,576 tokens, Mistral Medium 3.5: 262,144 tokens (observed 2026-06-03 11:12).
Observed 2026-06-03 11:12 (UTC). Source: OpenRouter public pricing (/api/v1/models). Prices change — check each provider's official pricing for the latest. This site publishes only observed values, never predictions.