Gemini 3.1 Pro Preview
As of Oct 4, 2026, the cheapest Gemini 3.1 Pro Preview API price is $1 per 1M input tokens (Kilo Gateway) and $6 per 1M output tokens (Kilo Gateway). Gemini 3.1 Pro Preview is offered by 33 providers in the gemini-pro family, reasoning enabled. Google's own rate is $12 per 1M output tokens. One provider lists it as a free-tier offer.
API pricing by provider
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.
| Provider | 1M input | 1M output | 1M cache read | 1M cache write | Context |
|---|---|---|---|---|---|
| Kilo Gateway | Cheapest$1 | Cheapest$6 | $0.1 | $0.1875 | 1.0M |
| 302.AI | $2 | $12 | — | — | 1.0M |
| Abacus | $2 | $12 | $0.2 | — | 1.0M |
| AIHubMix | †$2 | $12 | $0.2 | — | 1.0M |
| Auriko | †$2 | $12 | $0.2 | — | 1.0M |
| CrossModel | †$2 | $12 | $0.2 | $2 | 1.0M |
| DaoXE | $2 | $12 | $0.2 | — | 1.0M |
| Eden AI | †$2 | $12 | $0.2 | $0.375 | 1.0M |
| Eden AI | †$2 | $12 | $0.2 | $0.375 | 1.0M |
| FastRouter | $2 | $12 | — | — | 1.0M |
| FrogBot | $2 | $12 | $0.2 | — | 1.0M |
| †$2 | $12 | $0.2 | — | 1.0M | |
| Vertex | †$2 | $12 | $0.2 | — | 1.0M |
| Impossibl | †$2 | $12 | $0.2 | — | 1.0M |
| DevPass (LLM Gateway) | †$2 | $12 | $0.2 | — | 1.0M |
| LLM Gateway | †$2 | $12 | $0.2 | — | 1.0M |
| LLM Gateway | †$2 | $12 | $0.2 | — | 1.0M |
| Merge Gateway | †$2 | $12 | $0.2 | — | 1.0M |
| NanoGPT | $2 | $12 | $0.2 | $0.375 | 1.0M |
| Ofox | $2 | $12 | $0.2 | $4.5 | 1.0M |
| OpenCode Zen | †$2 | $12 | $0.2 | — | 1.0M |
| OpenRouter | †$2 | $12 | $0.2 | $0.375 | 1.0M |
| Opper | †$2 | $12 | $0.2 | — | 1.0M |
| OrcaRouter | †$2 | $12 | $0.2 | — | 1.0M |
| Perplexity Agent | †$2 | $12 | $0.2 | — | 1.0M |
| Pioneer | $2 | $12 | $0.2 | $0.375 | 1.0M |
| Poe | $2 | $12 | $0.2 | — | 1.0M |
| Requesty | †$2 | $12 | $0.2 | $4.5 | 1.0M |
| Tempr Gateway | †$2 | $12 | $0.2 | — | 1.0M |
| Vercel AI Gateway | †$2 | $12 | $0.2 | — | 1.0M |
| Vivgrid | †$2 | $12 | $0.2 | — | 1.0M |
| ZenMux | $2 | $12 | $0.2 | $4.5 | 1.0M |
| Venice AI | †$2.5 | $15 | $0.5 | $0.5 | 1.0M |
| Kenarifree | free | free | — | — | 1.0M |
Gemini 3.1 Pro Preview pricing FAQ
What is the cheapest Gemini 3.1 Pro Preview API?
As of Oct 4, 2026, Kilo Gateway has the lowest Gemini 3.1 Pro Preview output price at $6 per 1M tokens, and Kilo Gateway has the lowest input price at $1 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.
How much does Gemini 3.1 Pro Preview cost on Google?
Google charges $2 per 1M input tokens and $12 per 1M output tokens for Gemini 3.1 Pro Preview.
How many providers offer Gemini 3.1 Pro Preview?
33 providers list Gemini 3.1 Pro Preview on Sovyron; 33 of them sell it at a metered per-token price.
Is Gemini 3.1 Pro Preview free?
1 provider(s) list a free-tier offer: Kenari. Free tiers usually have rate limits.
What is the context window of Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview supports a 1.0M-token context window and up to 66k output tokens.