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

Astra costs $50 per million output tokens versus $0.50 for GPT-6 Luna, so the author advises against giving simple work to the expensive model.

The author calls GPT-6 Astra the best 3D design model right now and shares a complete guide to getting started with 3D design through Codex.

A Japanese creator gave the same script and staging work to Claude Opus and GPT-6 Astra and says Opus was better in every part, including the script and staging.

A poll asking which model people would choose if Opus 5.5 and GPT-6 Astra both cost $0 and had unlimited usage.

Crawl4AI, SearXNG, Docling, Qdrant, Letta and DeepEval add search, parsing, storage, memory and grounding checks so GPT-6 Astra can act as a research agent that cites sources.

A user compares Claude Opus 5.5 with ChatGPT Astra on complex logic tasks, saying Opus finishes in an hour what Astra takes a week to do, and notes all 12 of their accounts are still active.

A Russian-speaking author says they used GPT-6.1 Sol and GPT-6 Astra in Ultra mode to recreate the town of Novac from Fallout: New Vegas as a Fallout 2 mod.

A user complains that Codex usage resets come so often they have more than they can use, and asks for hard project ideas for GPT-6 Astra, with the one rule being no more SaaS.

A user finds Astra excels at reasoning and logic, suiting math and complex feature work, but falls short on software engineering details and architecture, so they added two Skills in Codex to enforce conventions.

A roundup of five DevDay 2026 announcements: the memory agent Dots, GPT-6.1 Sol, the Astra Ultrafast speed mode, a $500 Pro plan, and Codex Cloud.

The author urges OpenAI to bring back the 5-hour limits and 20x usage on Pro, says no OpenAI model is currently worth using over Opus 5.5, and argues Astra did not fix the taste problem.

After normalizing for token efficiency, the author calculates Astra usage at only 52% of Opus 5.5 and says OpenAI needs to double usage and add a 5-hour limit to match Anthropic.