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Claude Opus 4.5
by Anthropic
CLOSEDHOSTEDAPILONG CONTEXTPAIDREASONING
RANKED #78 OF 228 ASSISTANTS · OVERALL #132 OF 6,618 · VIBE SCORE 6.1 · 358 VOICES
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding
HAPPY8.7
83 mentions
SAD6.3
40 mentions
VIBE TRAJECTORY
26 weeks · 126 voices
HOLDING UP
Recent vibe is steady. No clear fade in the crowd.
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 4.5 is closed, so you rent it. These open-weight models can genuinely stand in for it. Download once, own forever.
- OPEN WEIGHTS7.5Dots3 NoteXiaohongshuChoose it for high quality multimodal reasoning and long agentic workflows offline.🏆 NEAR-PEER QUALITY💻 STRONG AT CODE🔒 PRIVATE & OFFLINE2.6k VOICESMATCH★★★
- OPEN WEIGHTS5.4
Llama 4 MaverickMetaChoose it when you need rapid multimodal responses and massive context at lower cost.⚡ FAST💸 COST EFFICIENT❤️ CROWD FAVORITE1.9k VOICESMATCH★★★ - OPEN WEIGHTS7.5
Qwen3.8 27BAlibabaChoose it to run strong multimodal coding and agent tasks locally on consumer GPUs.🪶 RUNS ON LESS🔒 PRIVATE & OFFLINE💻 STRONG AT CODE5.7k VOICESMATCH★★★
WHAT THE INTERNET SAYS
People generally like Claude Opus 4.5, with some gripes. Biggest praise: help with code.
299 POSTS · 59 COMMENTS · REDDIT · STACK OVERFLOW · GITHUB · BLUESKY · LEMMY · X · DEV.TO · OTHER FORUMS · HACKER NEWS · BLOG
PEOPLE LOVE
- Popular for coding help (11 mentions)
PEOPLE COMPLAIN ABOUT
- People find it expensive (3 mentions)
- Sometimes makes things up (3 mentions)
TOPIC BY TOPIC
- Help with codePEOPLE LOVE THIS
11 thumbs up · 2 thumbs down
- PriceMIXED FEELINGS
3 thumbs up · 3 thumbs down
- Getting facts rightMIXED FEELINGS
3 thumbs up · 3 thumbs down
IN THEIR OWN WORDS
- FROM REDDIT >
“Even better than Claude Code..”
- FROM LEMMY >
“Mistral Small Creative beats Claude Opus 4.5 at explaining transformers — 50x cheaper, higher scores.”
- FROM REDDIT >
“Anthropic: Claude Opus 4.5 helps virology experts reconstruct viruses more accurately.”
- FROM REDDIT >
“Claude Opus 4.5, "lowest hallucination rate" they say..”
LOOKING FOR AN ALTERNATIVE?
Checked picks first: tags say why you would switch, stars say how fully each one stands in for Claude Opus 4.5.
Grok 4.6
GPT 5.6 Sol
Gemini 3.7 Flash> SOURCES (12)
- REDDIT · 2026-04-05 · 7713 UPVOTESClaude is bypassing Permissions
Claude is bypassing Permissions
- REDDIT · 2026-01-10 · 1138 UPVOTESI asked ChatGPT, Gemini, Claude, and Deepseek to rank themselves.
I asked ChatGPT, Gemini, Claude, and Deepseek to rank themselves.
- REDDIT · 2026-01-27 · 812 UPVOTESOpen source Kimi-K2.5 is now beating Claude Opus 4.5 in many benchmarks including coding.
Open source Kimi-K2.5 is now beating Claude Opus 4.5 in many benchmarks including coding.
- REDDIT · 2025-11-24 · 673 UPVOTESIntroducing Claude Opus 4.5: our strongest model to date
Introducing Claude Opus 4.5: our strongest model to date
- REDDIT · 2025-11-29 · 655 UPVOTESNew benchmark: Claude Opus 4.5 broke the efficiency wall.+21% intelligence while getting 66% cheaper
New benchmark: Claude Opus 4.5 broke the efficiency wall.+21% intelligence while getting 66% cheaper
- REDDIT · 2025-11-25 · 585 UPVOTESClaude Opus 4.5 broke a benchmark by being too clever and exploiting a loophole
Claude Opus 4.5 broke a benchmark by being too clever and exploiting a loophole
- REDDIT · 2025-12-08 · 479 UPVOTESOpenAI has by far THE WORST guardrails of every single model provider
OpenAI has by far THE WORST guardrails of every single model provider
- REDDIT · 2025-11-24 · 411 UPVOTESClaude 4.5 Opus SWE-bench
Claude 4.5 Opus SWE-bench
- REDDIT · 2025-12-20 · 394 UPVOTESClaude 4.5 opus achieves metr time horizon of 4 hours 49 mins
Claude 4.5 opus achieves metr time horizon of 4 hours 49 mins
- REDDIT · 2025-12-05 · 359 UPVOTESGemini 3 Pro Vision benchmarks: Finally compares against Claude Opus 4.5 and GPT-5.1
Gemini 3 Pro Vision benchmarks: Finally compares against Claude Opus 4.5 and GPT-5.1
- REDDIT · 2025-11-24 · 329 UPVOTESAnthropic has released Claude Opus 4.5. SOTA coding model, now at $5/$25 per million tokens.
Anthropic has released Claude Opus 4.5. SOTA coding model, now at $5/$25 per million tokens.
- REDDIT · 2026-02-22 · 277 UPVOTESThe ARC-AGI2 Illusion Of Progress: If Changing the Font Breaks the Model, It Doesn't Understand
The ARC-AGI2 Illusion Of Progress: If Changing the Font Breaks the Model, It Doesn't Understand