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Claude Opus 4.5
by Anthropic
CLOSEDHOSTEDAPILONG CONTEXTPAID
RANKED #75 OF 316 ASSISTANTS · OVERALL #102 OF 493 RANKED · VIBE SCORE 6.1 · 744 VOICES ·
COPY BADGE pastes a README snippet with the rank SVG.
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
HAPPY8.8
136 mentions
SAD6.2
69 mentions
VIBE TRAJECTORY
26 weeks · 303 voices in this window
HONEYMOON FADING
Early praise is cooling off in recent weeks.
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 WEIGHTS7.6
Qwen3.8 27BAlibabaTop open multimodal model for coding and daily tasks with local privacy.💻 STRONG AT CODE🔒 PRIVATE & OFFLINE❤️ CROWD FAVORITE21.2k VOICESMATCH★★★ - OPEN WEIGHTS7.2
DeepSeek V4 Flash Vision ExpDeepSeekOpen multimodal model with frontier agentic coding and vision capabilities.💻 STRONG AT CODE🏆 NEAR-PEER QUALITY💸 COST EFFICIENT5.5k VOICESMATCH★★★ - OPEN WEIGHTS6.8Ling 3.0 Flash VLinclusionAIFast and lightweight open vision model for high throughput daily queries.💸 COST EFFICIENT⚡ FAST🪶 RUNS ON LESS5.7k VOICESMATCH★★★
WHAT THE INTERNET SAYS
The internet is split on Claude Opus 4.5. Biggest praise: help with code. Biggest gripe: saying no too much.
623 POSTS · 136 COMMENTS · REDDIT · STACK OVERFLOW · GITHUB · BLUESKY · LEMMY · X · DEV.TO · BLOG · DEV FORUMS · OTHER FORUMS · HACKER NEWS
PEOPLE LOVE
- Popular for coding help (24 mentions)
- Answers come back fast (5 mentions)
- Good at writing and wording things (4 mentions)
PEOPLE COMPLAIN ABOUT
- Outages, errors, or limits get in the way (13 mentions)
- Refuses or lectures more than people like (12 mentions)
- Sometimes makes things up (9 mentions)
- People find it expensive (6 mentions)
TOPIC BY TOPIC
- Help with codeMOSTLY POSITIVE
24 thumbs up · 10 thumbs down
- Working when you need itA SORE SPOT
4 thumbs up · 13 thumbs down
- Getting facts rightA SORE SPOT
5 thumbs up · 9 thumbs down
- Saying no too muchA SORE SPOT
1 thumbs up · 12 thumbs down
- PriceMIXED FEELINGS
6 thumbs up · 6 thumbs down
- SpeedMOSTLY POSITIVE
5 thumbs up · 2 thumbs down
- WritingPEOPLE LOVE THIS
4 thumbs up · 0 thumbs down
IN THEIR OWN WORDS
- 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..”
- FROM LEMMY >
“Mistral Small Creative beats Claude Opus 4.5 at explaining transformers — 50x cheaper, higher scores.”
- FROM REDDIT >
“Am I doing something wrong or is Claude Opus 4.5 ridiculously expensive?.”
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
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 · 2026-04-11 · 492 UPVOTESWow; just tried "/model claude-opus-4-5-20251101" and the difference in capability between 4.5 and 4.6 right now is night and day.
Wow; just tried "/model claude-opus-4-5-20251101" and the difference in capability between 4.5 and 4.6 right now is night and day.
- 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 · 2025-12-03 · 391 UPVOTESClaude Opus 4.5 is now available in Claude Code for Pro users
Claude Opus 4.5 is now available in Claude Code for Pro users
- 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