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Claude Fable 5.1
by Anthropic
CLOSEDHOSTEDAGENTSWRITING HELPCODING HELPFAST RESPONSES
RANKED #67 OF 316 ASSISTANTS · OVERALL #92 OF 493 RANKED · VIBE SCORE 6.1 · 29,171 VOICES ·
COPY BADGE pastes a README snippet with the rank SVG.
A fast, capable assistant designed for coding tasks and long-form writing.
HAPPY7.6
1.8k mentions
SAD7.4
2.5k mentions
VIBE TRAJECTORY
26 weeks · 23,616 voices in this window
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 Fable 5.1 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
Claude Fable 5.1 earns high praise for quick answers, natural writing, and strong coding help. However, users frequently complain about its high cost, strict usage limits, and occasional preachy refusals.
16320 POSTS · 12851 COMMENTS · REDDIT · HACKER NEWS · BLUESKY · X · GITHUB · DEV FORUMS · LEMMY · DEV.TO · BLOG · OTHER FORUMS · STACK OVERFLOW
PEOPLE LOVE
- Popular for coding help (86 mentions)
- Answers come back fast (18 mentions)
- Good at writing and wording things (20 mentions)
- Does what you ask without fighting you (3 mentions)
PEOPLE COMPLAIN ABOUT
- Outages, errors, or limits get in the way (94 mentions)
- Refuses or lectures more than people like (69 mentions)
- Sometimes makes things up (59 mentions)
- People find it expensive (51 mentions)
TOPIC BY TOPIC
- Help with codePEOPLE LOVE THIS
86 thumbs up · 27 thumbs down
- PriceMIXED FEELINGS
53 thumbs up · 51 thumbs down
- Working when you need itA SORE SPOT
7 thumbs up · 94 thumbs down
- Getting facts rightA SORE SPOT
27 thumbs up · 59 thumbs down
- Saying no too muchA SORE SPOT
2 thumbs up · 69 thumbs down
- SpeedMOSTLY POSITIVE
18 thumbs up · 9 thumbs down
- WritingMOSTLY POSITIVE
20 thumbs up · 7 thumbs down
- Long conversationsMIXED FEELINGS
7 thumbs up · 6 thumbs down
- Doing what you askPEOPLE LOVE THIS
3 thumbs up · 1 thumbs down
IN THEIR OWN WORDS
- FROM BLOG >
“A more complete community summary from @brianzhan1 claims Neon starts from Kimi K2.6 , lifts success on an internal FrontierXRD eval from 2.7% to 55.3% , and beats Astra and Claude Fable 5.1 at lower inference cost.”
- FROM BLOG >
“@arena showed Astra and Fable as top-tier but expensive, with Astra Max at +$11.7% / $3.94 per task versus Sol xHigh at +$7.0% / $1.03 ; Fable 5.1 Max at +$13.7% / $4.40 versus Opus 5 High at +$10.2% / $2.07 .”
- FROM REDDIT >
“Fable 5.1 feels downgraded today..”
- FROM REDDIT >
“Fable 5.1 is really fantastic, but it’s burning through the usage limit extremely fast!.”
LOOKING FOR AN ALTERNATIVE?
Checked picks first: tags say why you would switch, stars say how fully each one stands in for Claude Fable 5.1.
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DeepSeek V4 Flash> SOURCES (12)
- X · 2026-08-16 · 3330 UPVOTESOn tokens and prices per token. I said I’d write more about this, so here goes: an OpenAI token != another model’s token
On tokens and prices per token. I said I’d write more about this, so here goes: an OpenAI token != another model’s token
- REDDIT · 2025-08-14 · 2418 UPVOTESGPT-5 Just Finished Pokemon Red!
GPT-5 Just Finished Pokemon Red!
- REDDIT · 2025-08-09 · 2307 UPVOTESI’m neurodivergent. GPT-4o changed my life. Please stop shaming people for forming meaningful AI connections.
I’m neurodivergent. GPT-4o changed my life. Please stop shaming people for forming meaningful AI connections.
- REDDIT · 2026-07-28 · 2244 UPVOTESGPT-5, the world best model just 1 year ago, is today inferior to Qwen3.6 27B and most today’s low-tier models
GPT-5, the world best model just 1 year ago, is today inferior to Qwen3.6 27B and most today’s low-tier models
- REDDIT · 2025-07-10 · 1888 UPVOTESDon’t make me tap the sign
Don’t make me tap the sign
- REDDIT · 2026-09-01 · 1689 UPVOTESok this is wild. Used Claude Fable 5.1 and said "build me Cities: Skylines in three.js"
ok this is wild. Used Claude Fable 5.1 and said "build me Cities: Skylines in three.js"
- REDDIT · 2025-08-14 · 1596 UPVOTESGPT-5 is nearly 3x faster than o3 at earning badges in Pokémon Red
GPT-5 is nearly 3x faster than o3 at earning badges in Pokémon Red
- REDDIT · 2025-08-16 · 1583 UPVOTESI don’t know why y’all are hating on Chat GPT 5
I don’t know why y’all are hating on Chat GPT 5
- REDDIT · 2025-08-18 · 1468 UPVOTESI was impressed it got this one. GPT-5 isn't so dull
I was impressed it got this one. GPT-5 isn't so dull
- REDDIT · 2025-08-13 · 1436 UPVOTESOpenAI should put Redditors in charge
OpenAI should put Redditors in charge
- REDDIT · 2025-08-08 · 1385 UPVOTESGPT-5: the Manhattan Project of overpromising
GPT-5: the Manhattan Project of overpromising
- REDDIT · 2026-07-29 · 1329 UPVOTESClaude Opus 5 is Insane
Claude Opus 5 is Insane