LOADING DATASHEET
GROUNDED IN REAL HUMAN CONVERSATIONSYOUR BENCH
Claude Opus 5.5
★ LIVE
by Anthropic
JUST LANDED · UPDATING HOURLY
CLOSEDHOSTEDAPILONG CONTEXTPAIDREASONING
RANKED #132 OF 328 ASSISTANTS · OVERALL #213 OF 7,067 · VIBE SCORE 5.9 · 1,090 VOICES
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...
HAPPY8.1
155 mentions
SAD6.9
123 mentions
VIBE TRAJECTORY
26 weeks · 4,141 voices
TOO QUIET
Not enough weekly voices to call a trend yet.
HOW TO USE IT
Closed model. Anthropic hosts it, so you use it through an app or an API.
PREFER OPEN SOURCE? THE CROWD HAS PICKS
Claude Opus 5.5 is closed, so you rent it. These open-weight models can genuinely stand in for it. Download once, own forever.
Qwen3.8 27BWHAT THE INTERNET SAYS
People are mostly frustrated with Claude Opus 5.5 right now. Biggest praise: getting facts right. Biggest gripe: help with code.
473 POSTS · 617 COMMENTS · REDDIT · GITHUB · HACKER NEWS · LEMMY · DEV.TO
PEOPLE LOVE
- Usually gives correct answers (2 mentions)
PEOPLE COMPLAIN ABOUT
- People find it expensive (5 mentions)
- Coding help disappoints some people (5 mentions)
TOPIC BY TOPIC
- PriceA SORE SPOT
3 thumbs up · 5 thumbs down
- Help with codeA SORE SPOT
2 thumbs up · 5 thumbs down
- Getting facts rightMOSTLY POSITIVE
2 thumbs up · 1 thumbs down
IN THEIR OWN WORDS
- FROM GITHUB >
“Found and added two new model families with official, fully-priced documentation: Claude Opus 5.5 (Anthropic's new recommended default, half of Opus 5's price with a non-standard 0.05x cache-read multiplier) and GPT-6 Sol / GPT-6 Luna (filling out the GPT-6 family below the existing gpt-6-astra with the same six-tier…”
LOOKING FOR AN ALTERNATIVE?
Other models the crowd has fully reviewed, starting with multimodal models like this one.
Grok 4.6> SOURCES (12)
- HACKER NEWS · 2026-09-22 · 942 UPVOTESClaude Opus 5.5
Claude Opus 5.5
- HACKER NEWS · 2026-09-22 · 273 UPVOTESClaude Opus 5.5
Claude Opus 5.5
- HACKER NEWS · 2026-09-22 · 182 UPVOTESClaude Opus 5.5 Intelligence, Performance and Price Analysis (Max)
Claude Opus 5.5 Intelligence, Performance and Price Analysis (Max)
- REDDIT · 2026-09-15 · 107 UPVOTESOpus 5.2 Roblox Showcase
Opus 5.2 Roblox Showcase
- REDDIT · 2026-09-14 · 91 UPVOTESOpus 5 Is Currently Routing to Opus 5.2 for Some Users
Opus 5 Is Currently Routing to Opus 5.2 for Some Users
- REDDIT · 2026-09-18 · 56 UPVOTESJev is amazing! I'm letting it play Pokemon Red with a harness being built by Opus 5 in real-time — follow along!
Jev is amazing! I'm letting it play Pokemon Red with a harness being built by Opus 5 in real-time — follow along!
- REDDIT · 2026-09-20 · 34 UPVOTES48 hrs: 5-hour limits have been a joke!
48 hrs: 5-hour limits have been a joke!
- REDDIT · 2026-09-19 · 16 UPVOTESOpus 5.2 has to be AGI it just coded an entire 5 minute movie about titanic and showed how everything happened
Opus 5.2 has to be AGI it just coded an entire 5 minute movie about titanic and showed how everything happened
- REDDIT · 2026-08-28 · 11 UPVOTESOpus 5 Instruction Following is Genuinely Concerning
Opus 5 Instruction Following is Genuinely Concerning
- GITHUB · 2026-09-22 · 8 UPVOTESfeat(models): add claude-opus-5-5
feat(models): add claude-opus-5-5
- REDDIT · 2026-09-19 · 5 UPVOTESHow are you running out of limits instantly?(Max and above users only)
How are you running out of limits instantly?(Max and above users only)
- GITHUB · 2026-09-22 · 0 UPVOTESfix(resume): close R18b resume residuals
fix(resume): close R18b resume residuals