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Google: Gemini 3.5 Flash vs OpenAI: GPT-5.6 Sol

google logoGoogle: Gemini 3.5 Flashgoogle/gemini-3.5-flashVSopenai logoOpenAI: GPT-5.6 Solopenai/gpt-5.6-sol

Google: Gemini 3.5 Flash wins on more metrics (5 of 9), but the right pick depends on what you optimize for — see the breakdown below.

MetricGoogle: Gemini 3.5 FlashOpenAI: GPT-5.6 Sol
Intelligence Index50.258.9✓
Coding Index70.177.4✓
GPQA Diamond92%94%✓
Design Arena Elo1313✓—
Speed (tokens/sec)168✓48
Latency1.0s✓3.7s
Input price /M$1.50✓$5.00
Output price /M$9.00✓$30.00
Context window1.0M1.1M✓
CapabilitiesReasoningToolsJSONVisionAudioReasoningToolsJSONVision
Google: Gemini 3.5 Flash details →OpenAI: GPT-5.6 Sol details →