Gemini 3.1 Pro
Last verified August 24, 2026 · Google pricing ↗$2.00/1M input · $12.00/1M output · 1.0M context · Google
premiummultimodallong-contextresearchaudio
When to use Gemini 3.1 Pro
Google's flagship. Competes directly with GPT-5.4 and Claude Opus on benchmarks. Strong at multimodal tasks with native audio and video understanding. The thinking mode budget makes it interesting for reasoning-heavy workloads.
- Competitive with GPT-5.4 on key benchmarks
- Native audio and video input support
- 1M token context window
- Thinking mode with configurable budget
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Alternatives to Gemini 3.1 Pro
Pricing Details
GooglePreview only (gemini-3.1-pro-preview) — Google's pricing page still labels it Preview, and there is no GA Gemini Pro on the card. The stored rate is the short-prompt tier: prompts up to 200,000 tokens bill $2.00/$12.00, and prompts above 200,000 bill $4.00/$18.00. So a request that actually uses this model's 1M context costs double on input and 1.5x on output, and the figure on this page is a floor for long-context work. Estimated tokens (different tokenizer).
Input / 1M tokens
$2
Output / 1M tokens
$12
Context Window
1.0M
Max Output
66K
Price History
No price change recorded since 2026-07-24, when this site started tracking this model.
Frequently Asked Questions
Common questions about Gemini 3.1 Pro pricing and usage
Read More About Gemini 3.1 Pro
GPT-5.5 Pro lists at $30/$180 per million tokens, and it drops the cache discount that keeps the standard model cheap.
May 25, 2026 · 8 min read
DeepSeek scrapped the May 31 price cliff. The 75% V4-Pro cut is the permanent rate now.
May 23, 2026 · 8 min read
Gemini 3.5 Flash costs 3x what Gemini 3 Flash did. Google priced it that way because it beats their own Pro model on agentic work.
May 20, 2026 · 10 min read