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Claude Opus 5.5's benchmark results, Bach-style music and animation

BridgeBench places Opus 5.5 first overall in its new V3 rankings, ahead of GPT-6 Astra and Claude Fable 5.1. Users also describe a Bach-style fugue and an animation made with Python and Blender.

Thomas WolfTW
EmadEM
will brownWB
17 Sources, 20d ago, first seen 20d ago

TLDR

BridgeBench announced V3 on September 23, ranking Claude Opus 5.5 first at 760, followed by GPT-6 Astra at 734, Claude Fable 5.1 at 711 and GPT-6 Sol at 643. It claims Opus 5.5 beats Astra and Fable while costing “2.5x less.”

Early creative experiments include a Bach-style fugue that one user praised as just as good as Astra's. Claude's account also shared a short story about a watermelon; its creator said Opus 5.5 animated the GIF in Python and rendered it in Blender.

Combined views

133.7K

17 Sources, first seen 20d ago

1.9K likes93 comments383 saves192 reposts

Combined views

133.7K

17 Sources, first seen 20d ago

1.9K likes93 comments383 saves192 reposts

Sentiment

Positive58.9%41.1%Negative

Based on 412 sentiment-bearing replies from 345 accounts across 15 conversations.

Sentiment

Positive58.9%41.1%Negative

Based on 412 sentiment-bearing replies from 345 accounts across 15 conversations.

17 Sources

Bridgebench@bridgebenchBridgeBench V3 is officially live. Claude Opus 5.5 is the #1 overall model. 1. Claude Opus 5.5: 760 2. GPT-6 Astra: 734 3. Claude Fable 5.1: 711 4. GPT-6 Sol: 643 Opus 5.5 beats GPT-6 Astra and Fable 5.1 while costing 2.5x less. https://bridgebench.ai20d
Auggie@aug5thmusicClaude Opus 5.5 writes a fugue in the style of Bach. I called Astra’s fugue the most impressive musical feat I’d ever seen from an LLM, and this is just as good. The circle-of-fifths sequence beginning at 1:13 is beautiful. The interplay of voices is natural and satisfying. LLMs are getting to the point where their music is good enough to listen to for pure enjoyment.20d
Kevin Ngo@kevin_t_ngoThank you @claudeai! GIF animated in Python and rendered in Blender by Claude Opus 5.520d
j⧉nus@repligateRT @aug5thmusic: Claude Opus 5.5 writes a fugue in the style of Bach. I called Astra’s fugue the most impressive musical feat I’d ever seen…20d
will brown@willcbi think this is my favorite piece of ai art ever it goes hard, it's heartwrenching and hilarious, and like all of the best pop punk, it's derivative and asinine and kinda sounds like shit truly the platonic ideal of "pop punk song made by a computer"18d
Aran Nayebi@aran_nayebiRT @SAshworthHayes: "Can a robot write a symphony? Can a robot turn a... canvas into a beautiful masterpiece?" "What? Yes, obviously. Can'…18d
Julian Schrittwieser@MononofuIt truly blows my mind what Claude can now do entirely through code 🤯17d
Thomas Wolf@Thom_WolfRT @eric_ho: opus music videos are so good that you can learn about @GoodfireAI mech interp research and get llm psychosis at the same time…16d
w̸͕͂͂a̷͔̗͐t̴̙͗e̵̬̔̕r̴̰̓̊m̵͙͖̓̽a̵̢̗̓͒r̸̲̽ķ̷͔́͝@anthrupadNo one ever thought to evaluate the music models hard so they’re all happy gods who’ve foomed containment16d
Andrew Curran@AndrewCurran_Best one yet. These Opus 5.5 gens really are next level.16d
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    17 Sources

    Bridgebench@bridgebenchBridgeBench V3 is officially live. Claude Opus 5.5 is the #1 overall model. 1. Claude Opus 5.5: 760 2. GPT-6 Astra: 734 3. Claude Fable 5.1: 711 4. GPT-6 Sol: 643 Opus 5.5 beats GPT-6 Astra and Fable 5.1 while costing 2.5x less. https://bridgebench.ai20d
    Auggie@aug5thmusicClaude Opus 5.5 writes a fugue in the style of Bach. I called Astra’s fugue the most impressive musical feat I’d ever seen from an LLM, and this is just as good. The circle-of-fifths sequence beginning at 1:13 is beautiful. The interplay of voices is natural and satisfying. LLMs are getting to the point where their music is good enough to listen to for pure enjoyment.20d
    Kevin Ngo@kevin_t_ngoThank you @claudeai! GIF animated in Python and rendered in Blender by Claude Opus 5.520d
    j⧉nus@repligateRT @aug5thmusic: Claude Opus 5.5 writes a fugue in the style of Bach. I called Astra’s fugue the most impressive musical feat I’d ever seen…20d
    will brown@willcbi think this is my favorite piece of ai art ever it goes hard, it's heartwrenching and hilarious, and like all of the best pop punk, it's derivative and asinine and kinda sounds like shit truly the platonic ideal of "pop punk song made by a computer"18d
    Aran Nayebi@aran_nayebiRT @SAshworthHayes: "Can a robot write a symphony? Can a robot turn a... canvas into a beautiful masterpiece?" "What? Yes, obviously. Can'…18d
    Julian Schrittwieser@MononofuIt truly blows my mind what Claude can now do entirely through code 🤯17d
    Thomas Wolf@Thom_WolfRT @eric_ho: opus music videos are so good that you can learn about @GoodfireAI mech interp research and get llm psychosis at the same time…16d
    w̸͕͂͂a̷͔̗͐t̴̙͗e̵̬̔̕r̴̰̓̊m̵͙͖̓̽a̵̢̗̓͒r̸̲̽ķ̷͔́͝@anthrupadNo one ever thought to evaluate the music models hard so they’re all happy gods who’ve foomed containment16d
    Andrew Curran@AndrewCurran_Best one yet. These Opus 5.5 gens really are next level.16d
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