GPT-5.6 API Prices Slashed: Entry Model Down 80%, Flagship Gets 2.5x Speed Boost
量子位 · wechat · 2026-07-31
OpenAI has announced massive price cuts and speed boosts for its GPT-5.6 API series, intensifying the LLM price war.
- Luna (Entry-level): Prices slashed by 80% to $0.2 per million input tokens and $1.2 per million output tokens. Positioned for cost-sensitive, high-frequency Agent workflows rather than just basic classification.
- Terra (Daily driver): Reduced by 20%, dropping to $2 (input) and $12 (output) per million tokens.
- Sol (Flagship): Price unchanged but introduces a new Fast mode, offering up to 2.5x the speed for double the price.
OpenAI attributed the cost reductions to GPT-5.6 Sol optimizing its own production systems (e.g., rewriting GPU kernels and improving speculative decoding), which lowered end-to-end serving costs by 20%. This move significantly lowers the barrier for running continuous Agent tasks, initiating a cost-reduction flywheel driven by the model itself.
Related event: OpenAI Launches GPT-5.6: Luna Price Drops 80%, Sol Self-Optimizes(63 posts)→
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