Video by Matthew Lebo (@MatthewLebo_) · originally posted on XView original post on X
GPT-6.1 Sol vs GPT-6 Astra vs Claude Opus 5.5
Cinematic rocket launch, medium effort
Matthew Lebo@MatthewLebo_5 likes2,267 views
GPT-6.1 Sol, GPT-6 Astra and Claude Opus 5.5, all at medium effort, get the same prompt for a cinematic, photorealistic rocket launch scene in Three.js. The author picks Opus.
Models
| Model | Effort | Time | Tokens | Notes |
|---|---|---|---|---|
| GPT-6.1 SolOpenAI | Medium | 8.7 min | 530.2K tokens | |
| GPT-6 AstraOpenAI | Medium | 9.6 min | 660.9K tokens | Written as “GPT-Astra” |
| Claude Opus 5.5Anthropic | Medium | 38.9 min | — | About 6.89 million tokens in total, mostly cache reads. |
Cost & time as stated in the post: Video sped up 2x by the author.
Details
| Kind | Side-by-side (same post, same prompt) |
|---|---|
| Task | Cinematic rocket launch, medium effort |
| Author’s verdict | Opus 5.5 is by far the winner, though Astra’s rocket model was better apart from an inverted nose cone. — @MatthewLebo_’s view (paraphrased) |
| Topic | Rocket launch in Three.js |
| Prompt (from the post) | Build a cinematic, photorealistic, beautifully textured rocket launch scene using Three.js |
| Category | 3D & Shaders |
| Mode | Not stated |
| Posted | |
| Video length | 2.3 min |
| Likes / views | 5 / 2,267 · as of Oct 18, 2026 |
| Bookmarks | 3 |
| Sponsored | No |
| Original post | x.com/MatthewLebo_/status/2105047166733746209 |
Related
Compare all 3 modelsClaude Opus 5.5 vs GPT-6 AstraClaude Opus 5.5 vs GPT-6.1 SolGPT-6 Astra vs GPT-6.1 Sol
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