OpenAI Slashes GPT-5.6 Luna API Price by 80%, Terra Cut by 20%
OpenAI has significantly reduced API pricing for two of its GPT-5.6 models, Luna and Terra, making high-volume AI workloads more affordable for developers and businesses. Luna now costs $0.20 per million input tokens and $1.20 per million output tokens, reflecting an 80% price reduction, while Terra is priced at $2 and $12 per million input and output tokens respectively, a 20% cut. The changes are rolling out across platforms including AWS, and both models remain accessible via ChatGPT Work, Codex, and the OpenAI API. OpenAI also retains a Fast mode for GPT-5.6 Sol, offering up to 2.5 times faster speeds at twice the standard price, automatically applied to priority requests. The lower token costs are expected to make previously cost-prohibitive automation use cases more viable and reduce expenses for existing workflows without requiring engineering changes.
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