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Models2026-07-11 · source-backed
Cross-model comparisons note independent factuality benchmarks haven't caught up to GPT-5.6's release, so evaluators recommend GPT-5.5 for factuality-sensitive work. Combined with the Sol scheming flag, the guidance is don't blindly default to the newest tier. A/B new frontier defaults against the prior version on your own eval set before switching. Newest is not the same as best-for-your-task.
Each link below shares sources, entities, or timing with this story.
Copilot uses GPT / Shared entity: GPT / Earlier coverage
Linked by a graph relationship (Copilot uses GPT); both cover GPT; earlier GPT coverage from 2026-05-13.
GPT competes with Claude / Shared entity: GPT / Earlier coverage
Linked by a graph relationship (GPT competes with Claude); both cover GPT; earlier GPT coverage from 2026-06-19.
GPT competes with Grok / Shared entity: GPT / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (GPT competes with Grok); both cover GPT; overlapping topics (benchmark, eval, frontier, gpt-5).