Last refreshed 2026-05-25. Next refresh: weekly.
Why use Gemini 3.5 Flash on OpenRouter?
OpenRouter offers Gemini 3.5 Flash with pay-as-you-go pricing at $1.50/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Gemini 3.5 Flash across 4 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: google/gemini-3.5-flashgoogle/gemini-3.5-flashRequest example
google/gemini-3.5-flash.Gotchas
- Use provider model ID "google/gemini-3.5-flash", not the LLMReference slug "gemini-3.5-flash".
Compare Gemini 3.5 Flash Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Google AI Studio | $1.50 | $9.00 |
| GCP Vertex AI | $1.50 | $9.00 |
| Vercel AI Gateway | $1.50 | $9.00 |
| OpenRouter | $1.50 | $9.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.50 |
| Output tokens | $9.00 |
Capabilities
About Gemini 3.5 Flash
Gemini 3.5 Flash is Google DeepMind's generally available Flash model for sustained frontier-level performance on agentic and coding tasks. It supports multimodal inputs, native thinking, tool and function calling, structured outputs, code execution, search grounding, batch processing, and long contexts up to 1M tokens.
FAQ
What does Gemini 3.5 Flash cost on OpenRouter?
On OpenRouter, Gemini 3.5 Flash costs $1.5 per 1M input tokens and $9 per 1M output tokens.
What is the context window for Gemini 3.5 Flash on OpenRouter?
Gemini 3.5 Flash supports a 1,048,576 token context window on OpenRouter.
How does OpenRouter compare to other Gemini 3.5 Flash providers?
Gemini 3.5 Flash is available from 4 providers. The cheapest input pricing is $1.5/1M tokens from Google AI Studio.
What API model ID do I use for Gemini 3.5 Flash on OpenRouter?
Use the model ID google/gemini-3.5-flash when calling OpenRouter's API.
Who created Gemini 3.5 Flash?
Gemini 3.5 Flash was created by Google DeepMind as part of the Gemini 3.5 model family.
Is Gemini 3.5 Flash open source?
Gemini 3.5 Flash is not open source; the seed data lists it as proprietary.