OpenAI · featureFast mode

Valid from

2026-07-30

Valid until

still holds

Published

2026-07-30

Recorded by AsOf

2026-10-31

Checked

2026-10-31 · its source page states the value and the date

Confidence

0.70

Sources

“July, 2026 Jul 30 Update gpt-5.6-sol gpt-5.6-terra gpt-5.6-luna v1/responses v1/chat/completions Starting July 30, GPT-5.6 Luna costs 80% less, while GPT-5.6 Terra costs 20% less. See pricing details . We're also introducing Fast mode in the API, which replaces our Priority Processing offering.”— what the page says, read 2026-10-31

• OpenAI API changelog, August 5, 2026primary · developers.openai.com · 2026-08-05
• OpenAI API changelog, July 30, 2026primary · developers.openai.com · 2026-07-30

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