New
Solve and chat with the latest frontier models, for free
GPT-5.6 Sol · Claude Opus 5 · Gemini 3.1 Pro — all in one place.
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Earlier this week, we made GPAI free.
Today, we're going further — the leading frontier models are now part of the free plan.
You can now try GPT-5.6 Sol, Claude Opus 5, and Gemini 3.1 Pro in both Solver and AI Chat — no paid plan required.
Pick the model that fits the problem
GPAI models
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GPAI Pro
Built for complex tasks, with fast answers cross-checked by multiple frontier models.
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GPAI Fast
Optimized for quick solutions when speed matters most.
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Frontier models
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Gemini 3.1 Pro ✨
Google's most capable model for advanced STEM work.
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