Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
BETA
Subscribe
← Back to Index·All Google models
Google
GoogleFrontierAUTO PROFILE

Gemini 3.1 Pro

Frontier

Gemini 3.1 Pro sits in the frontier tier — built for high-capability reasoning, tool use, and long-form output where capability outweighs cost. Available via Google. 1M-token context. Premium pricing.

Gemini 3.1 Pro is a frontier AI model from Google. It costs $2.000 per million input tokens and $12.000 per million output tokens (blended $5.000/M), with a 1M-token context window.

Modalities textProvider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$2.000/M
per million input tokens
OUTPUT
$12.000/M
per million output tokens
BLENDED 70/30
$5.000/M
default reference rate · how it's calculated →
CONTEXT
1M
1,000,000 tokens
What it's good at
  • Strong general reasoning
  • Tool use & function calling
  • Long-form writing
  • Production-grade reliability
Typical use cases
  • Production assistants
  • Long-document analysis
  • Multi-step agent workflows
  • Engineering copilots
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
More from Google
See all 23 →
Gemini 3.5 Pro
Frontier · 1M ctx
in $2.000/Mout $12.000/M
Gemini 3.5 Flash
Balanced · 1M ctx
in $1.500/Mout $9.000/M
Gemini 3 Pro
Frontier · 1M ctx
in $2.000/Mout $12.000/M
Gemini 3 Flash
Efficient · 1M ctx
in $0.500/Mout $3.000/M
Gemini 2.5 Pro
Frontier · 1M ctx
in $1.250/Mout $10.000/M
Gemini 2.5 Flash
Balanced · 1M ctx
in $0.150/Mout $0.600/M
Frequently asked questions

How much does Gemini 3.1 Pro cost?

Gemini 3.1 Pro costs $2.000 per million input tokens and $12.000 per million output tokens, for a blended reference rate of $5.000 per million tokens.

What is Gemini 3.1 Pro's context window?

Gemini 3.1 Pro supports up to 1M tokens of context (1,000,000 tokens).

What is Gemini 3.1 Pro best for?

Gemini 3.1 Pro is well suited to Strong general reasoning, Tool use & function calling and Long-form writing.

Who makes Gemini 3.1 Pro?

Gemini 3.1 Pro is developed and served by Google.