gemini-3.1-pro-preview API Pricing
Google charges $2.00 per 1M input tokens and $12.00 per 1M output tokens. Verified 2026-06-11 against the official Google pricing page.
Rate for prompts up to 200K tokens; above 200K is $4 in / $18 out
Input / 1M tokens
$2.00
Output / 1M tokens
$12.00
Context window
Not published
What it costs to run
| Workload | Tokens | Cost |
|---|---|---|
| Single short call | 2K in, 500 out | $0.010 |
| Typical chat turn | 10K in, 1K out | $0.032 |
| Long document pass | 100K in, 2K out | $0.224 |
| 1,000 chat turns | 10M in, 1M out | $32.00 |
Price history
No price move recorded for gemini-3.1-pro-preview since tracking began on 2026-06-11. Every future change lands here with the before and after.
How it compares
Ranked on the blended cost of a typical chat turn (10K in, 1K out), not the input rate alone.
| OpenAI | o3 | $0.028 per turn |
| OpenAI | gpt-4.1 | $0.028 per turn |
| Anthropic | claude-sonnet-5 | $0.030 per turn |
| OpenAI | gpt-5.2 | $0.032 per turn |
| OpenAI | gpt-5.3-codex | $0.032 per turn |
| gemini-3.1-pro-preview | $0.032 per turn | |
| OpenAI | gpt-4o | $0.035 per turn |
| OpenAI | gpt-5.4 | $0.040 per turn |
| Anthropic | claude-sonnet-4.5 | $0.045 per turn |
| Anthropic | claude-sonnet-4-6 | $0.045 per turn |
| OpenAI | gpt-5.6-sol | $0.060 per turn |
Head to head
Full cost breakdowns against the models gemini-3.1-pro-preview is usually weighed against, including the workload shape where the cheaper option flips.
TechFastForward coverage of gemini-3.1-pro-preview
What we wrote when this model, or the rest of its line, was news.
- Google DeepMind Signals AGI Push as Hassabis Steps Down2026-08-08
- Google DeepMind Breaks Formation as Hassabis Steps Down2026-08-07
- Google DeepMind Replaces Hassabis While Dean Exits2026-08-06
- Google Gemini 3.5 Pro Doubles Context, Shifts AI Rivalry2026-06-24
- Anthropic Fable 5 Beats Rivals on Pricing and Guardrails2026-06-17
- Google Cuts AI Plus to $4.99 and Doubles Storage in 20262026-06-09
Free JSON API
Every tracked model, including this one, is available as JSON. Free to use with attribution and a link back.
curl https://techfastforward.com/api/data/llm-pricingMaintained by Jordan Hale, TechFastForward. Prices are read daily from the official provider page and recorded only when they move. See every tracked model on the LLM API Pricing Tracker.