Gemini 3.1 Pro Preview Custom Tools API
About
Build advanced reasoning agents with Gemini 3.1 Pro Preview Custom Tools, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $2.00/1M input and $12.00/1M output tokens, native tool calling support. Access Gemini 3.1 Pro Preview Custom Tools via the Neon API with up to 66K output tokens.
Capabilities
Input Modalities
textimagevideoaudio
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
66K
Tokens
Pricing
Standard (per 1M tokens)
Input
$2.00
Output
$12.00
Caching (per 1M tokens)
Read
$0.20
Frequently Asked Questions
Gemini 3.1 Pro Preview Custom Tools by Neon costs $2.00 per 1M input tokens and $12.00 per 1M output tokens. Cached reads cost $0.20 per 1M tokens.
Model Details
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NEON_AI_GATEWAY_BASE_URL
NEON_AI_GATEWAY_TOKEN
API Base URL
${NEON_AI_GATEWAY_BASE_URL}/v1