The first number is which generation of their LLMs it belongs to.

Fable is the first model in the 5th generation.

The second number is an incremental release, not a generational leap forward.

They do

https://platform.claude.com/docs/en/build-with-claude/struct...

> Structured outputs are generally available on the Claude API for Claude Opus 4.8, Claude Mythos Preview, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 4.6, Claude Sonnet 4.5, Claude Opus 4.5, and Claude Haiku 4.5

Ah, I was reading the aws bedrock docs which are probably incorrect

https://docs.aws.amazon.com/bedrock/latest/userguide/model-c...

https://docs.aws.amazon.com/bedrock/latest/userguide/model-c...

https://docs.aws.amazon.com/bedrock/latest/userguide/model-c...

I doubt they'll phase out Haiku, some work needs speed more than intelligence. Haiku can answer a lot faster than Sonnet.

I haven't tried Fable yet but my experience with Claude is it does not engineer things well. Without direction from me, it will either over-engineer things to the point of absurdity, or do the total opposite and have little to no abstraction with repeated code everywhere.

But it doesn't make you the good guy, it makes you the best of a bad bunch. The least bad. Dario gets a boner every time he talks about taking your job.

Opus 4.8 already drops to Sonnet when you ask it cybersecurity or biology questions

Of course. You use their AI to ship code full of bugs and security holes and then they conveniently have the tool to fix them, for an extra fee.

5 minutes to load and it just dumps me to a documentation site with no useful information about that this is, who made it, what it can do, etc.

Apologies - we had a lot of sudden traffic from Hackernews! We’re looking at it right now. Thanks for flagging.

What if they have an actual back-end with long-running processes and scheduled tasks?

Maybe that's why all these vibe coded slop apps also use Clerk for auth alongside Supabase etc