@_MaxBlade: sonnet 5.5 just built the most addicting game I have ever played... 🤯 only up clone. fully multiplayer and running in the browser, i made it over 200m before falling. link below, how far can you go?
XSEP 29, 2026
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Released
Claude Sonnet 5.5
Anthropic · released SEP 28, 2026
CLAIM — WHAT ANTHROPIC SAYS
A faster, lower-cost complement to Opus 5.5 for everyday tasks, bug fixes and polished documents, slides and spreadsheets.
- Terminal-Bench 4.0
- 70.6%
- FrontierCode 1.1 (Max)
- 46.2%
- CursorBench 4.0
- 55.5%
- Humanity's Last Exam (tools)
- 64.5%
- Price / Mtok
- $10.00
REALITY — 4 INDEPENDENT REPORTS
Agentic
Agentic
@_MaxBlade: I asked Sonnet 5.5 to create a overcooked clone i could play in the broswer. the results shocked me... It is delivering triple aaa level polish at 20x cheaper than opus 5.5 if you put it in x-high it will RUN. this model will be a perfect worker agent for opus 5.5 or the upcoming fable 5.5 to orchestrate. Anthropic is MOGGGING rn.
also tested on Claude Opus 5.5
XSEP 29, 2026
Other
@filicroval: what the fuck, why is Sonnet 5.5 this good?? gave Sonnet and Opus 5.5 the exact same prompt. Sonnet came back with this masterpiece. all in a SINGLE HTML file. Sonnet won this one, it's not even close
also tested on Claude Opus 5.5
XSEP 29, 2026
@bridgemindai: Claude Sonnet 5.5 just ONE SHOT this zombies game. Max effort is noticeably better than every other level but it is expensive. This game cost $177 and took 49 minutes to build. This is insane.
XSEP 29, 2026