Gemini 3.1 Pro pricing
Gemini 3.1 Pro costs $2.00 per 1M input tokens and $12.00 per 1M output tokens as of October 2026. Tracked daily since 25 July 2026 across 93 snapshots.
Current rates
- Input: $2.00 per 1M tokens
- Output: $12.00 per 1M tokens
- Context window: 1,000,000 tokens
- Above 200,000 tokens the rate changes to $4.00 input / $18.00 output
Recorded changes
| Date | Field | From | To |
|---|---|---|---|
| 26 Jul 2026 | context | 2000000 | 1000000 |
Cheaper alternatives to Gemini 3.1 Pro
Ranked by blended cost assuming a 3:1 input-to-output ratio, which is typical of chat and agent workloads. Only currently callable models with a comparable context window are listed.
| Model | Input / 1M | Output / 1M | Cheaper by |
|---|---|---|---|
| Claude Sonnet 5.5 | $2.00 | $10.00 | 11% |
| Gemini 4 Argon | $2.00 | $10.00 | 11% |
| GPT-6.1 Sol | $2.00 | $10.00 | 11% |
| Grok 4.7 | $2.00 | $6.00 | 33% |
| Mistral Medium 3.5 | $1.50 | $7.50 | 33% |
Cite this data
Free to reuse under CC BY 4.0 with a link back.
Text
YemHub (2026). Gemini 3.1 Pro API pricing history. YemHub AI Pricing Index. Retrieved 26 October 2026, from https://yemhub.com/price-history/gemini-3-1-pro/
BibTeX
@misc{yemhub2026gemini31proapipricinghistory,
author = {{YemHub}},
title = {Gemini 3.1 Pro API pricing history},
year = {2026},
howpublished = {\url{https://yemhub.com/price-history/gemini-3-1-pro/}},
note = {YemHub AI Pricing Index, accessed 2026-10-26}
}