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Gemini 3 Flash Preview
by Google DeepMind · Language Models
by Google DeepMind · Language Models
Gemini 3 Flash is Google DeepMind's Gemini 3 series Flash-tier model, rolled out around mid-December 2025, with the preview being the early developer-access release before general availability. It pairs Pro-grade reasoning with Flash-level speed at less than a quarter the cost of Gemini 3 Pro, and is natively multimodal with a 1M-token input context window and up to 64K output tokens. It posts frontier-level scores on PhD-level reasoning benchmarks such as GPQA Diamond (about 90.4%) while serving coding, document analysis and agentic use cases. Ideal for high-throughput tasks that still need strong reasoning.
$0.3861 in · $2.3166 out · $0.0386 cached / 1M
| Usage | Rate (USD) | Unit |
|---|---|---|
| Input tokens | $0.3861 | per 1M tokens |
| Cached input (cache hit) | $0.0386 | per 1M tokens |
| Output tokens | $2.3166 | per 1M tokens |
Official model pricing · currency: USD · pre-deduction settled by actual usage
OpenAI-compatible · base URL https://api.tunerouter.com/v1/
curl https://api.tunerouter.com/v1/chat/completions \
-H "Authorization: Bearer $TUNEROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "gemini-3-flash-preview", "messages": [{"role": "user", "content": "Hello!"}]}'Model ID: gemini-3-flash-preview · works with OpenAI SDKs — just point base_url at api.tunerouter.com