OpenAI Slashes GPT-5.6 Luna API Price by 80%, Rivaling Opus 5 at 1/17 Cost
gabrielchua · x · 2026-08-01
OpenAI officially announced significant API price reductions: 80% off for GPT-5.6 Luna and 20% off for GPT-5.6 Terra, along with a faster option for GPT-5.6 Sol. The lower costs are directly reflected in usage limits for Codex and ChatGPT Work.
Third-party benchmarks reveal that the cheaper Luna xhigh now performs near Anthropic's Opus 5 in browser automation tasks, delivering comparable performance at 1/17th of the cost.
Related event: OpenAI Slashes GPT-5.6 Prices, Luna Down 80%(7 posts)→
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