Gemini 3.1 Pro Preview — pricing & specs
Gemini 3.1 Pro Preview is a flagship model from Google, at capability tier 7 of 8. Live $/M-token pricing and specs from the Mintok catalog, as of 2026-09-21.
$/M-token pricing
as of 2026-09-21 · GoogleWhat Gemini 3.1 Pro Preview costs in practice
At $12/M output tokens, Gemini 3.1 Pro Preview is the 1st-cheapest of 8 priced tier-7 models in the Mintok catalog — about 52% below the tier median of $25/M.
| Scenario | Est. cost |
|---|---|
| 1M input + 1M output tokens | $14.00 |
| A 10K-token request (8K in / 2K out) | $0.040 |
| 1,000 agent runs (~2K in / 500 out each) | $10.00 |
| 1M-token RAG chat session (900K cached in / 100K out) | $1.38 |
Estimated from list price (as of 2026-09-21) at the token mixes shown; your real cost depends on prompt/response length and cache hit-rate. Model your own volume →
Specifications
- Vendor
- Family
- Gemini Pro Preview
- Capability tier
- 7 / 8
- Size class
- FLAGSHIP
- Category
- GENERAL
- Context window
- 1,048,576 tokens
- Licensing
- Proprietary
Alternatives at tier 7
Same capability tier, sorted by output price — the cheaper-capable options.
- Kimi K3Moonshot$15/M out
- GPT-5.6 SolOpenAI$20/M out
- Claude Opus 4.8Anthropic$25/M out
- Claude Opus 4.7Anthropic$25/M out
- Claude Opus 4.6Anthropic$25/M out
- Claude Opus 4.5Anthropic$25/M out
FAQ
How much does Gemini 3.1 Pro Preview cost per token?
Gemini 3.1 Pro Preview costs $2 per million input tokens and $12 per million output tokens (cached input $0.20/M), via Google, as of 2026-09-21.
Is Gemini 3.1 Pro Preview expensive?
At $12/M output tokens, Gemini 3.1 Pro Preview is the 1st-cheapest of 8 priced tier-7 models in the Mintok catalog — about 52% below the tier median of $25/M.
What does a typical request with Gemini 3.1 Pro Preview cost?
At list price, a 10K-token request (8K in / 2K out) with Gemini 3.1 Pro Preview costs about $0.040, and 1,000 agent runs (~2K in / 500 out each) about $10.00.
What is Gemini 3.1 Pro Preview's context window?
Gemini 3.1 Pro Preview supports a 1,048,576-token context window.
What capability tier is Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview sits at capability tier 7 of 8 on the Mintok scale (FLAGSHIP size class).
Is Gemini 3.1 Pro Preview open-source or proprietary?
Gemini 3.1 Pro Preview is a proprietary model from Google, accessed via API.
Put Gemini 3.1 Pro Preview to work
Benchmark it on your prompts, or size a deployment and compare $/M-token against alternatives.
Pricing and specs are maintained by Mintok's catalog watchers from public sources. Not investment advice. Methodology.