Thariq#544
We're hosting Claude Fable 5 Build Day in San Francisco on June 13.
Point Fable 5 at a problem worth solving and build a solution with Claude Code.
The Anthropic team will be in the room, with a chance to win from a prize pool of $150K in Claude credits across 3 finalists.
Positive users are excited about the Claude Fable 5 Build Day hackathon for its $150K prize pool and chance to build alongside Anthropic engineers, while negative users call the credits-only prizes a poor value or too expensive to join.
Spots are limited. Apply by June 12:
https://cerebralvalley.ai/e/claude-startups-build-day?utm_source=anthropics&utm_medium=social&utm_campaign=2026-06-09-ClaudeDevsX
Tonight I ran the same blind research brief through three independent passes — Claude Opus 4.8 (max effort) and the brand-new Claude Fable 5 (max effort) in Claude Code, plus my own analysis — with no cross-reading. Then I compared them. Not a benchmark. My real codebase, my real pipeline files, my real problem. The trick: where all three converged = high confidence the strategy is right. Where they diverged = the actual signal. Fable 5 won on the divergences — deepest first-hand codebase audit, quantified the real gap (I was auto-processing ~16% of intake), and surfaced the cheapest path I'd missed. Convergence validates. Divergence is where you learn. Best eval I've run isn't "which model scores higher" — it's "give 3 models the same hard task and read their disagreements."
@ClaudeDevs Good build days are less about the demo and more about whether the project survives week 2. A lot of hackathon output dies because the scope was optimized for the room, not for real users.
@ClaudeDevs $150K in credits, not cash. You build something great - and the prize is paying Anthropic more to use it. Is that a reward or a subscription deal?
@ClaudeDevs the prize is credits to use more of their product. cool cool cool.
@ClaudeDevs When remote date?
@BranzinoHQ @ClaudeDevs What....?
@ClaudeDevs I’ll be there!
@ClaudeDevs Guys I’m out of tokens can you pls reset the limits again😭 I need finish a project and very happy for fable 5. I think you name bc Fable Game
@ClaudeDevs I hope I make enough money of building things to actually go to one of these events. 😂
A $150K prize pool and the Anthropic team in the room is not your average hackathon. Building with Claude Code in front of the people who made it is a real opportunity to get your project seen by the right eyes. Are you shipping something that could genuinely change how people use AI or is this just another build day? 🚀
@ClaudeDevs If I turn up with a simple cyber security problem would I be redirect to a different building and refused entry?
@ClaudeDevs 150 bin dolar nakit değil, sadece kendi ekosistemlerinde geçerli API kredisi dağıtıyorlar.
Geliştiriciyi altyapıya bağlamanın kusursuz yolu. Dışarıdan devasa ödül gibi duran bu hamle, sıfıra yakın maliyetle parlak zihinleri kalıcı olarak kendi ağına kilitleme taktiği.
@ClaudeDevs You want to only build benchmark examples? As you cannot do anything else with this crazy safety guard 😁😁😁
@ClaudeDevs can i pull up?
punchy:**
> $150K in credits, Claude Code, and Anthropic engineers in the room? That's a builder's dream. 🚀
**Curious:**
> What kinds of problems are you hoping participants tackle? Looking forward to seeing the projects that come out of this.
**Slightly competitive:**
> The real prize isn't the credits—it's discovering a problem worth solving and shipping something people actually need. 💡🚀
@ClaudeDevs I'd love if you did something like this in London 🇬🇧
@ClaudeDevs Boy I just so wish events like this happen in Vancouver too..
@ClaudeDevs Cool! How do we go about getting one of these in New Zealand/Australia?
@ClaudeDevs hey claude make me visa to usa and earn money to trip to sf. u have 3 days. make no mistake
Thariq#544We're hosting Claude Fable 5 Build Day in San Francisco on June 13.
Point Fable 5 at a problem worth solving and build a solution with Claude Code.
The Anthropic team will be in the room, with a chance to win from a prize pool of $150K in Claude credits across 3 finalists.