Comparing 2

GPT-6 LunavsGemini 3.8 Flash

Send one prompt to every model and read the answers side by side, with speed and cost for each.

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Highlighted values are the best among your picks.

GPT-6 LunaOpen AINEW

OpenAI's most efficient model for focused, high-volume tasks

Gemini 3.8 FlashGoogle

Google's most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows

Intelligence
Intelligence index38.140.9
Price
Input, $ per 1M$0.10$0.75
Output, $ per 1M$0.50$3.75
Typical message (500 in / 250 out)$0.00017$0.0013
Repeated input, cached$0.01 · 10× cheaper$0.07 · 10× cheaper
Prompts over 200K tokens$0.20 / $0.75Same price
Limits
Context window1.05M1.05M
Longest answer128K tokens66K tokens
Knowledge cutoffMay 2026Not published
What it can take and do
AcceptsTextImagePDFTextImagePDFAudioVideo
Reasoning effortOff · Low · Med · High · X-high · MaxLow · Med · High
Tool useYesYes
Guaranteed JSON outputYesYes
Availability
Released22 Sept 20262 Sept 2026
Open weightsNoNo
API providers offering it3629