GPT-5.x Pro still leads hard technical tasks as rivals’ deep-think variants fade
emollick · x · 2026-07-24
The GPT-5.x Pro series is still being described as the best set of models for hard technical problems since launch.
- Emad Mostaque says there appears to be “parallel model magic” that still isn’t well explained.
- He adds that Anthropic has never had an equivalent offering, and Google seems to have effectively given up on its Deep Think variants.
- A reply notes that Ultra and Ultracode appear to be xHigh-effort Fable and Sol 5.6 variants, and that Pro is available through the API.
The post is essentially a comparison of frontier-model behavior, product positioning, and access paths.
Related event: GPT-5.x Pro Leads Technical Tasks as Competitors Face Criticism(2 posts)→
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