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Google · Language model

Gemini 3 Flash Preview

google/gemini-3-flash-preview
  • Language
Released Dec 17, 2025

Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool...

Specifications

Context window
1,048,576 tokens
Max output
65,536 tokens
Input
text, image, file, audio, video
Output
text
Reasoning effort
high, medium, low, minimal
Tokenizer
Gemini

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • max_tokens
  • reasoning
  • reasoning_effort
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_p

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3-flash-preview","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'