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ModelPreviewfamily · Gemini

Gemini 3.1 Pro Preview

Googleai.google.dev/gemini-api/docs/models/gemini-3.1-

Advanced intelligence, complex problem-solving skills, and powerful agentic and vibe coding capabilities.

quality75

Updated 17 min ago · first seen 11 Sept 2026

model_01M293V7TJRE2PAYTGJJHTTMTB

Context
1.05M tokens
T1 · 34 min ago
Released
19 Feb 2026
T2 · 17 min ago

Specification

Family
Gemini

Source:Google AI for Developers (Gemini API docs)T1observed 35 min agohigh

Release date
19 Feb 2026

Source:OpenRouter public model & pricing listingT2observed 17 min agomedium

Status
preview

Source:Google AI for Developers (Gemini API docs)T1observed 35 min agohigh

Context window
1.05M tokens

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

Max output
65.5K tokens

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

Modalities
audio, image, pdf, text, video

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

Input modalities
text, image, video, audio, pdf

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

Output modalities
text

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

Tokenizer
Gemini

Source:OpenRouter public model & pricing listingT2observed 17 min agomedium

API model id
gemini-3.1-pro-preview

Source:Google AI for Developers (Gemini API docs)T1observed 35 min agohigh

Capabilities
Caching, Code execution, File search, Function calling, Grounding with Google Maps, Search grounding, Structured outputs, Thinking, URL context

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

File input
Yes

Source:OpenRouter public model & pricing listingT2observed 17 min agomedium

Latest update
2026-02

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

Openrouter id
google/gemini-3.1-pro-preview

Source:OpenRouter public model & pricing listingT2observed 17 min agomedium

Supported parameters
include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_p

Source:OpenRouter public model & pricing listingT2observed 17 min agomedium

Versions
{"preview":["gemini-3.1-pro-preview","gemini-3.1-pro-preview-customtools"]}

Source:Google AI for Developers (Gemini API docs)T1observed 34 min agohigh

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

23

Source tiers

T1T218 / 5

Freshest observation

17 min ago

Conflicts

2 flagged