Google: Gemini 3.1 Pro Preview Custom Tools
Released Feb 25, 2026Try it on:
Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...
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Pricing
Per token
- Input (per 1M)
- $2.00
- Output (per 1M)
- $12.00
- Reasoning (per 1M)
- $12.00
- Cache Read (per 1M)
- $0.200
- Cache Write (per 1M)
- $0.375
Per unit
- Image input
- $0.0000/img
- Audio input
- $0.0000/sec
- Web search
- $0.014/call
Capabilities
Modality
text+image+file+audio+video->textContext
1M tokens
Tokenizer
Gemini
Max output
66K tokens
Moderation
Unmoderated
Supported parameters
include_reasoning
max_tokens
reasoning
response_format
seed
stop
structured_outputs
temperature
tool_choice
tools
top_p
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