/Tech1d ago

Replit launches a "High Effort" mode powered by Anthropic's Claude Fable 5 to handle complex agent builds

Agent usage costs are discounted 25% for one week

676644881112.5K
Original postAmjad Masad#356
Manny Bernabe@MannyBernabe

Claude Fable 5 now available on Replit. Build something amazing! 馃殌

Claude@claudeai

Introducing Claude Fable 5: a Mythos-class model that we鈥檝e made safe for general use.

Its capabilities exceed those of any model we鈥檝e ever made generally available.

10:59 AM 路 Jun 9, 2026 路 12.5K Views
Sentiment

Many users praised Replit's High Effort Mode powered by Claude Fable 5 as exciting and well-executed by the team, while a few objected that it risks locking developers in and overstated the capabilities.

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83.3%
Neg
16.7%
9 comments with sentiment.
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VIEWS44.4KBOOKMARKS57LIKES513RETWEETS28REPLIES25

Try Claude Mythos at 25% off on Replit.

High Effort handles your most complex builds with ease on Replit.

Now powered by Claude Fable 5.

25% off for the next 7 days.

1dViews 44.4KLikes 513Bookmarks 57
Zhen Li@zhenthebuilder

Added a magic toggle called high effort in @Replit , meaning 1. Agent building in highest effort 2. Fable 5 making complex decisions 3. 25% off agent cost with high efforts

I鈥檝e been using this mode and it feels like a step up in terms of building complex apps, magical experience

High Effort handles your most complex builds with ease on Replit.

Now powered by Claude Fable 5.

25% off for the next 7 days.

1dViews 6.8KLikes 51Bookmarks 7
Ken Goyarola@Kaygeeartworks

It's literally game time on @Replit . Go make one!

High Effort handles your most complex builds with ease on Replit.

Now powered by Claude Fable 5.

25% off for the next 7 days.

1dViews 5.1KLikes 13Bookmarks 2
Alpha Batcher@alphabatcher

@MannyBernabe Claude Fable 5 already everywhere

too fast

1dViews 71Likes 1
Zsolt@zsolt_vereb

@amasad That's not Mythos. Not by a long shot.

1dViews 113Likes 1
Devilfruitchess@devilfruitchess

@pirroh Can i hear one good reason to use this and not claude code directly?

1dViews 112Likes 1
Matt Beebe@TheMattBeebe

@zhenthebuilder @niallohiggins @Replit How does that 25% off compare to current Agent pricing? 1.5x?

1dViews 189
AdiiX@adiix_official

@MannyBernabe Claude Fable 5.0, make me a business, don鈥檛 make mistakes馃榿

1dViews 53Likes 1
Alvaro Balbin@elalvarobalbin

@amasad this is how replit locks devs into their environment before anyone notices they cant leave without losing all the context

1dViews 154
Luke Haines@LukeGainzz

@amasad Did you deliberately call it Mythos rather than Fable?

1dViews 132
Jazy@jazywho

@amasad Hey Amjad

How do i get in contact with you?

1dViews 128
Maksim@MaksimXBT

@amasad 7 days is a blink of an eye for adoption and support cycles

1dViews 125

@zhenthebuilder @amasad @Replit Thanks, Zhen! I鈥檓 excited to give this new agent a try.

I was wondering, does Replit share information about how much a token or money each agent uses?

1dViews 113
Jeroen Van den Bosch@Illusionweaver1

@amasad Let's give it a try & find out how it handles complex game dev!

1dViews 109
Varun Dogar@varunvibe

@pirroh The man behind the mission..great work by @Replit and your team looking after builders!

1dViews 47
Dugi@DugiBlast

@amasad

1dViews 32
Rugbist@rugbist_

@pirroh fable 5 really made replit capable of high effort lol

whats the catch with the 25% off?

1dViews 32
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