As of: 2026-10-14 00:22 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/p/x-pawelhuryn-2110046572826259918/

# Paweł Huryn: Muse Wonder Full fixed 44 of 105 real bugs, one behind GPT-6 Astra and ahead of Fable 5.1 and Opus 5.5

Paweł Huryn (@PawelHuryn), X, 2026-10-13.
Source: https://x.com/PawelHuryn/status/2110046572826259918

## Why it matters

An independent, real-repository test of Muse Wonder Full on the day after launch (about 42k views): it places Meta's model level with OpenAI's and Anthropic's best, in contrast to early 'benchmaxxed' complaints.

## Summary

Posted Oct 13, 2026 (16:34 UTC), opening a thread. Huryn says he tested Muse Wonder Full 1.0 "on real work. 2 repos. 105 bugs frontier models missed in Q1 2026. Find and fix what you can." His results (bugs fixed, with an image of the table): GPT-6 Astra (max) 45; Muse Wonder Full 1.0 (max) 44; Fable 5.1 (max) 43; Opus 5.5 (max) 41.7; Muse Spark 1.3 (max) 32.2; Grok 4.7 (xhigh) 29. "@AIatMeta has just matched Anthropic and OpenAI." He promises more effort levels and more runs later in the thread.

Caveats: a private test set by one person; the repositories, the grading and the number of runs per model are not described in this post (fractional scores suggest averages over runs); the rest of the thread and the image were not read for this file.

_Metrics as of 2026-10-13 via api.fxtwitter.com: 41,826 views, 272 likes. Author: about 134,700 followers._

## Archived text

> So, I tested Muse Wonder Full 1.0 on real work. 2 repos. 105 bugs frontier models missed in Q1 2026. Find and fix what you can.
> 
> I'm so surprised we need a new thread. 
> The results:
> 
> GPT-6 Astra (max): 45
> Muse Wonder Full 1.0 (max): 44
> Fable 5.1 (max): 43
> Opus 5.5 (max): 41.7
> Muse Spark 1.3 (max): 32.2
> Grok 4.7 (xhigh): 29
> 
> @AIatMeta has just matched Anthropic and OpenAI. Huge congrats!
> 
> Next in this thread, more effort levels and more runs for Muse Wonder Full 1.0. All dropping tonight 🧵

Archived 2026-10-13 via fxtwitter (unofficial).
Counts: 42,543 views, 276 likes, 19 reposts, 31 replies (at fetch time)
Media: https://pbs.twimg.com/media/HUhjrGWXcAAHqZD.jpg?name=orig

## Cited in

- 2026-10-12: [Meta releases Muse Wonder and Muse Wonder Full, its first frontier-class models](https://postcutoff.com/e/2026-10-12-meta-muse-wonder/)