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OpenAI announces Ultrafast mode for GPT-5.6 Sol in limited preview

Tech · Releases · Thu, August 13, 2026

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Ultrafast mode is a new API service tier for GPT-5.6 Sol that runs up to 14x faster than Standard processing, available to select customers.

Every year

DateEventWhen
Jun 24, 2026OpenAI updates chat-latest to the latest ChatGPT Instant model3 mo ago
Jul 6, 2026OpenAI releases GPT-Realtime-2.1 and GPT-Realtime-2.1 mini3 mo ago
Jul 9, 2026OpenAI releases the GPT-5.6 model family: Sol, Terra and Luna3 mo ago
Jul 28, 2026OpenAI releases GPT Transcribe and GPT Live Transcribe2 mo ago
Jul 29, 2026OpenAI releases an official Terraform provider2 mo ago
Aug 5, 2026OpenAI Fast mode supports long-context requests for GPT-5.6 models2 mo ago
Aug 6, 2026OpenAI updates chat-latest to the newest ChatGPT model2 mo ago
Aug 13, 2026OpenAI announces Ultrafast mode for GPT-5.6 Sol in limited preview43 days ago
Aug 20, 2026OpenAI gpt-image-2 adds transparent backgrounds in preview36 days ago
Aug 20, 2026OpenAI launches a Prompt Caching dashboard36 days ago
Aug 29, 2026OpenAI API mTLS and X.509 workload identity federation are GA27 days ago
Sep 3, 2026OpenAI releases GPT-6 Astra for complex end-to-end work22 days ago
Sep 8, 2026OpenAI GPT-Rosalind is GA for approved life sciences research17 days ago
Sep 8, 2026OpenAI Prompt Cache Diagnostics is generally available in the Responses API17 days ago
Sep 8, 2026OpenAI releases GPT Image 2.5 Sunburst and GPT Image 2.5 Flare17 days ago
Sep 10, 2026OpenAI GPT-Live 1 is generally available for full-duplex voice15 days ago
Sep 10, 2026Introducing the Agents API15 days ago
Sep 10, 2026OpenAI Agents API enters public beta15 days ago
Sep 22, 2026OpenAI releases GPT-6 Sol and GPT-6 Luna reasoning models3 days ago

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