OpenAI previewed Ultrafast mode for GPT-5.6 Sol, powered by Cerebras, generating up to 750 tokens per second—as much as 14x faster. It launches first in the OpenAI API for a select group of customers, targeting latency-sensitive workflows such as real-time voice, commerce, coding, financial research, and security response.

Key Takeaways

  • ✓GPT-5.6 Sol Ultrafast hits up to 750 tokens/sec, about 14x faster
  • ✓Inference is powered by Cerebras for latency-critical products
  • ✓Rolling out first via the OpenAI API for coding, voice, commerce, and security work
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GPT-5.6 Sol · in: $5 / out: $30
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🛠️ Ecosystem & IDERules
AI · LLM · Coding
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