Expired50% confidenceEventTime unknown
The first checkpoints of GPT-5.6 have begun internal testing, with internal codenames Amber Alpha and Beacon Alpha.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
6/3/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 9/1/2026(expired)
Sources
Related Entities
Related Claims
VerifiedThe development cycle of GPT-5.6 is currently fully underway at OpenAI, with the first batch of checkpoints having begun internal testing over the past few days.75% similarUnverifiedGPT-5.2 topped the ARC-AGI benchmark.74% similarUnverifiedGPT-5.5 slightly underperformed Claude's yet-to-be-released new model on the OS World Verified benchmark.72% similarUnverifiedTesters assessed that GPT-5.6 has reached an aesthetic standard in front-end design comparable to that of Kimi and Gemini.71% similarUnverifiedIn benchmark tests officially published by OpenAI, GPT-5.6 achieved a new top score on Terminal Bench in the programming domain and uses fewer tokens than GPT-5.5 on biology benchmarks (the results were self-disclosed by OpenAI and have not yet been independently verified).71% similar
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