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Claude Sonnet 4.5
by Anthropic
CLOSEDHOSTEDCODING HELPWRITING HELPRESEARCH ASSISTANTEVERYDAY TASKS
RANKED #67 OF 241 ASSISTANTS · OVERALL #110 OF 6,436 · VIBE SCORE 6.2 · 3,059 VOICES
An advanced AI assistant designed to help with writing, research, and programming.
HAPPY8.2
112 mentions
SAD6.8
118 mentions
VIBE TRAJECTORY
26 weeks · 224 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 Sonnet 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 27BAlibabaRun locally for agentic coding and multimodal tasks without cloud fees.💻 STRONG AT CODE🔒 PRIVATE & OFFLINE🪶 RUNS ON LESS9.9k VOICESMATCH★★★ - OPEN WEIGHTS5.4
Llama 4 MaverickMetaGreat everyday multimodal understanding and factual accuracy at lower inference cost.🏆 NEAR-PEER QUALITY💸 COST EFFICIENT❤️ CROWD FAVORITE2.0k VOICESMATCH★★★ - OPEN WEIGHTS6.7Qwen3 235BAlibabaHandles massive document contexts and heavy multimodal analysis with high fidelity.🏆 NEAR-PEER QUALITY💸 COST EFFICIENT1.3k VOICESMATCH★★★
WHAT THE INTERNET SAYS
Users love Claude Sonnet 4.5 for its strong coding assistance and natural writing skills. However, many complain about high costs, frequent outages or limits, occasional inaccuracies, and preachy refusals.
2586 POSTS · 473 COMMENTS · REDDIT · GITHUB · DEV.TO · BLUESKY · LEMMY · BLOG · STACK OVERFLOW · HACKER NEWS · X · DEV FORUMS
PEOPLE LOVE
- Popular for coding help (26 mentions)
- Good at writing and wording things (7 mentions)
PEOPLE COMPLAIN ABOUT
- Sometimes makes things up (22 mentions)
- Outages, errors, or limits get in the way (19 mentions)
- People find it expensive (16 mentions)
- Refuses or lectures more than people like (10 mentions)
TOPIC BY TOPIC
- Help with codeMOSTLY POSITIVE
26 thumbs up · 12 thumbs down
- PriceMIXED FEELINGS
16 thumbs up · 16 thumbs down
- Getting facts rightA SORE SPOT
10 thumbs up · 22 thumbs down
- Working when you need itA SORE SPOT
3 thumbs up · 19 thumbs down
- Saying no too muchA SORE SPOT
1 thumbs up · 10 thumbs down
- WritingPEOPLE LOVE THIS
7 thumbs up · 2 thumbs down
- SpeedA SORE SPOT
2 thumbs up · 4 thumbs down
- Long conversationsA SORE SPOT
1 thumbs up · 4 thumbs down
IN THEIR OWN WORDS
- FROM REDDIT >
“Just bought Windsurf after unlimited trial credits - massively disappointed with Claude Sonnet 4.5 - Is cursor better?.”
LOOKING FOR AN ALTERNATIVE?
Checked picks first: tags say why you would switch, stars say how fully each one stands in for Claude Sonnet 4.5.
Gemini 3.7 Flash
Grok 4.6> SOURCES (12)
- REDDIT · 2026-03-01 · 1705 UPVOTESAnthropic's Custom Claude Model For The Pentagon Is 1-2 Generations Ahead Of The Consumer Model
Anthropic's Custom Claude Model For The Pentagon Is 1-2 Generations Ahead Of The Consumer Model
- REDDIT · 2026-02-10 · 1402 UPVOTESI got tired of ChatGPT forgetting everything, so I built it a "Save Game" feature. 1,000+ sessions later, it remembers my decisions from 2…
I got tired of ChatGPT forgetting everything, so I built it a "Save Game" feature. 1,000+ sessions later, it remembers my decisions from 2 months ago.
- REDDIT · 2025-12-30 · 1309 UPVOTES30 day update: I gave several AIs money to invest in the stock market
30 day update: I gave several AIs money to invest in the stock market
- REDDIT · 2025-09-29 · 1298 UPVOTESClaude 4.5 Sonnet is here
Claude 4.5 Sonnet is here
- REDDIT · 2026-01-11 · 1157 UPVOTESClaude struggles against its own guidance to be "balanced" when asked about Trump's second term.
Claude struggles against its own guidance to be "balanced" when asked about Trump's second term.
- REDDIT · 2026-02-04 · 901 UPVOTESAnthropic mocks OpenAI's ChatGPT ad plans and pledges ad-free Claude
Anthropic mocks OpenAI's ChatGPT ad plans and pledges ad-free Claude
- REDDIT · 2025-11-05 · 857 UPVOTESPerplexity is DELIBERATELY SCAMMING AND REROUTING users to other models
Perplexity is DELIBERATELY SCAMMING AND REROUTING users to other models
- REDDIT · 2026-01-21 · 677 UPVOTESFull-Length Music Video using LTX‑2 I2V + ZIT
Full-Length Music Video using LTX‑2 I2V + ZIT
- REDDIT · 2025-09-29 · 666 UPVOTESClaude sonnet 4.5 is officially released
Claude sonnet 4.5 is officially released
- REDDIT · 2025-10-29 · 621 UPVOTESGrieving family uses AI chatbot to cut hospital bill from $195,000 to $33,000 — family says Claude highlighted duplicative charges,…
Grieving family uses AI chatbot to cut hospital bill from $195,000 to $33,000 — family says Claude highlighted duplicative charges, improper coding, and other violations
- REDDIT · 2025-11-06 · 586 UPVOTES“We Don’t Want a Bailout, We Just Need $1.4 Trillion and Everything Will Be Fine”
“We Don’t Want a Bailout, We Just Need $1.4 Trillion and Everything Will Be Fine”
- REDDIT · 2026-04-02 · 495 UPVOTESSo, claude have emotions? What????
So, claude have emotions? What????