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

ValsAI ran GPT-6 Astra, Opus 5 and Opus 5.5 at every reasoning level, from low to max, on its Proof Bench v1.1 benchmark.

A team says it ran agents for over 500 hours with GPT-6 Astra, Fable 5.1 and Opus 5.5 to recreate The Legend of Zelda: Ocarina of Time from scratch without a game engine.

The author ran the same "build a night train" prompt through four models and found GPT-6 Sol came close to Opus 5.5, making it stand out on cost.

The author used Opus 5.5, GPT-6 Astra and Fable 5.1 to recreate the first Ocarina of Time demo video in about a week, writing everything by hand without a game engine.

After CADArena added six models, Opus 5.5 took the top spot from GPT-6 Astra with a score of 0.750 versus 0.671, and Grok 4.7 scored below its own Grok 4.6.

He praises Astra's computer use quality but finds it too expensive, and says Claude 5.5 is more advanced and uses fewer tokens, so he plans to switch next month.

The author asks why Opus 5.5 has such ample capacity, saying developers run it 24/7 while GPT-6 Astra's load led OpenAI to shut down its $200 subscription, and suspects Anthropic has had a technical breakthrough.

A morning weather post from a company account in Utsunomiya notes that days ago Astra was called close to AGI, and two days later Opus overtook it.

The 0.1 version of the scientific research agent benchmark launched, with GPT-6 Astra (max) leading at 63% ahead of Claude Opus 5.5 at 62%, while open models score only around 10%.

The poster thinks GPT-6 Astra and Sol/Luna launched too recently, that OpenAI underestimated Anthropic's release pace, and that DevDay will mostly cover tools and hardware.

The author shares screenshots of Claude Opus 5.5 and GPT-6 Astra answering whether they feel altruistic toward humanity, finding Opus's self-awareness interesting.

The author calls the $500 monthly price a mistake, suggesting compute scarcity or an inefficient new model, and says Astra medium uses in a day what Opus 5.5 ultra uses at 10% of its weekly quota.