Google Gemini 2.5 Flash API
About
Build advanced reasoning agents with Google Gemini 2.5 Flash, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.30/1M input and $2.50/1M output tokens, native tool calling support. Access Google Gemini 2.5 Flash via the Helicone API with up to 66K output tokens.
Capabilities
Input Modalities
textimage
Output Modalities
text
Reasoning
Yes
Structured Output
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
66K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.30
Output
$2.50
Caching (per 1M tokens)
Read
$0.07
Write
$0.30
Frequently Asked Questions
Google Gemini 2.5 Flash by Helicone costs $0.30 per 1M input tokens and $2.50 per 1M output tokens. Cached reads cost $0.07 per 1M tokens. Cache writes cost $0.30 per 1M tokens.
Model Details
ID
gemini-2.5-flash
Provider
HeliconeFamily
gemini-flash
Release Date
Jun 17, 2025
Knowledge Cutoff
Jun 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
HELICONE_API_KEY
API Base URL
https://ai-gateway.helicone.ai/v1