← Back to all pricing

Gemini 3.1 Flash API Pricing — $0.75/M input, $4.50/M output

The ultimate balance of speed and multimodal intelligence.

Legacy — superseded by Gemini 3.6 Flash See Gemini 3.6 Flash pricing.
No announced shutdown date. Source · Full retirement tracker
Input
$0.75/M
Output
$4.50/M
Blended
$1.69/M
Provider
Verified 2026-04-06source

Speed

Not yet measured — see the speed benchmark leaderboard for models we do track.

Cost at scale

Tokens / monthEst. cost (blended 3:1)
100,000$0.17
1,000,000$1.69
10,000,000$16.88
100,000,000$168.75

How Gemini 3.1 Flash compares

Gemini 2.5 Flash Lite$0.18/MGemini 3.5 Flash Lite$0.56/MGemini 3.1 Flash Lite$0.56/MGemini 2.5 Flash$0.85/MGemini 3.6 Flash$3.38/MGPT-5.4 Mini$1.69/MGrok 4.3$1.56/Mo3-Mini$1.93/M
See all Google models →

FAQ

Is Gemini 3.1 Flash cheaper than GPT-5.4 Mini?

Gemini 3.1 Flash costs $1.69/M blended tokens, GPT-5.4 Mini costs $1.69/M — GPT-5.4 Mini is cheaper.

How much does 1 million tokens cost with Gemini 3.1 Flash?

At a 3:1 input:output ratio, 1 million blended tokens costs approximately $1.69. Pure input costs $0.75/M; pure output costs $4.50/M.

Who provides Gemini 3.1 Flash?

Gemini 3.1 Flash is served by Google. Pricing was last verified on 2026-04-06 against https://ai.google.dev/gemini-api/docs/pricing.

Try Gemini 3.1 Flash for free

Run real prompts against Gemini 3.1 Flash and every other model on this page in one workspace.

Try Gemini 3.1 Flash Free