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Google: Gemini 3.6 Flash vs OpenAI: GPT-5.6 Terra

google logoGoogle: Gemini 3.6 Flashgoogle/gemini-3.6-flashVSopenai logoOpenAI: GPT-5.6 Terraopenai/gpt-5.6-terra

Google: Gemini 3.6 Flash wins on more metrics (5 of 9), but the right pick depends on what you optimize for — see the breakdown below.

MetricGoogle: Gemini 3.6 FlashOpenAI: GPT-5.6 Terra
Intelligence Index50.155.0✓
Coding Index69.276.7✓
GPQA Diamond93%✓93%
Design Arena Elo—1282✓
Speed (tokens/sec)126✓70
Latency1.8s✓2.4s
Input price /M$1.50✓$2.50
Output price /M$7.50✓$15.00
Context window1.0M1.1M✓
CapabilitiesReasoningToolsJSONVisionAudioReasoningToolsJSONVision
Google: Gemini 3.6 Flash details →OpenAI: GPT-5.6 Terra details →