GPT-6 Astra in Practice: Tests, Use Cases, and Feedback

OpenAI published an openai/skills repository on GitHub with a set of skills usable with GPT-6 Astra and Codex, which a reposter called a must-save resource.

The author shares 16 hours of usage data: GPT-6 Astra cost $726 and Opus 5.5 cost $117, with a clear difference in token usage.

A Japanese tier list places Opus 5.5 ahead of GPT-6 Astra, calls Grok 4.7 unimpressive, and leaves Gemini out of the evaluation for now.

A user says many people are canceling Codex subscriptions for Opus 5.5, arguing OpenAI is short on compute and only retains users through free limit resets, with Astra 6.1 as the only hope.

A developer argues that OpenAI and Anthropic are rapidly expanding their own harnesses and that stronger models like Astra reduce the need for one, so reselling API tokens through a custom harness has no business case today.

The author used GPT-6 Astra on Apple Vision Pro to restyle their room in a Ghibli look in real time, with virtual objects placed and sized to match the real ones and styles switchable at any time.

Tibo and the Codex team have repeatedly hinted at speed, leading to speculation that a full GPT-6 Astra could run on Cerebras to justify a $500 plan, though a Sol- or Terra-sized model at that speed is seen as more likely.

A comparison post argues Sol 6.1 would likely lose to Opus 5.5 just as Sol 6 did, that even Sonnet is about to challenge Astra, and that OpenAI needs to ship something powerful at DevDay.

Using Luna GPT-6 and Astra, 312 agents hunted bugs in empryo and filed 213 reports, of which other agents reproduced 189 as real and threw out 16, with each fix shipping a lint rule for 197 rules so far.

The poster sees frequent quota resets as a sign of falling demand: two weeks after Astra demand paused $200 Pro sign-ups, users appear to be moving to Anthropic.

Note operations are split across code, Jev and Astra, with Jev guarding the link, promotion and recall gates while Astra only writes the final content.

A Japanese post says the author found a 200,000 yen corporate promo video request on a crowdsourcing platform and produced the finished video directly with Astra.