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GPT-6.1 Sol vs Gemini 3.8 Flash

GPT-6.1 SolOpenAI
Gemini 3.8 FlashGoogle
Our take

GPT-6.1 Sol and Gemini 3.8 Flash trade wins evenly on our provisional scores, but Gemini 3.8 Flash is 2.7× cheaper for everyday text work. Pick GPT-6.1 Sol when quality matters most, Gemini 3.8 Flash at volume.

Overall74Best71
Coding78Best66
Writing5880Best
Support5878Best
Value6466Best
Input / 1M$2.00$0.75Best
Output / 1M$10.00$3.75Best
Blended / 1M$4.00$1.50Best
Context window1.1MBest1M
Open weightsNoNo
Released29 Sept 20262 Sept 2026

Your monthly bill

50k
GPT-6.1 Sol$800
Gemini 3.8 Flash$300Cheapest
List prices, a quarter of the tokens as output. Scores are provisional, from Arena and Epoch AI.