Gemini 3.8 Flash

As of October 19, 2026, Gemini 3.8 Flash by Google costs $0.75 per 1M input tokens and $3.75 per 1M output tokens, with a 1M-token context window. It ranks 3rd of 29 models on the TensorFeed Intelligence Index's older 2024 benchmark set, with a score of 79 (as of October 21, 2026).

Gemini 3.8 Flash is Google's workhorse Flash release, shipped September 2, 2026 as gemini-3.8-flash. It holds the $0.75 per million input and $3.75 per million output that Gemini 3.7 Flash introduced, with one difference that changes how you should model it: Google printed the expiry. The introductory rate runs through December 31, 2026, and on January 1, 2027 both sides double to $1.50 and $7.50. Batch and Flex are half those rates and Priority is 1.8x. If you are sizing a Flash-tier workload for next year, the number to budget is the post-January one, and if you are choosing between Flash tiers on price alone, the choice you make in September expires in fifteen weeks. The model takes text, image, audio, video, and PDF input with a 1,048,576 token context window and 65,536 output tokens. Artificial Analysis measures GPQA Diamond at 95.3 for the high reasoning tier, which puts it within a point of frontier flagships at roughly a thirteenth of the input price, and Google reports SWE-bench Pro at 61.6 with sharp coding and terminal gains over 3.7 Flash. A separate Cyber variant shipped alongside it behind Fairwind gating and is not part of the standard endpoint. On October 8, 2026 Google deprecated Gemini 3.7 Flash and began routing its API requests to this model, so 3.8 Flash is now the only current Flash model above the Lite tier apart from 3.6 Flash.