GPT-5.3 Instant vs Gemini 3.1 Flash-Lite: Pricing, Speed, and Benchmarks Compared
Both launched March 3, 2026. One is cheap with a 1M token window. The other is the new default ChatGPT. Here is who wins where.
Gemini
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Gemini 3.1 Pro Coding Benchmarks: Developer Results
Gemini 3.1 Pro scores 2887 Elo on LiveCodeBench and 80.6% on SWE-Bench at $2/$12 per million tokens. Where it leads and where it falls short.