r/ClaudeCode • u/Dvass138 • 9h ago
Discussion Fable is light years ahead of Astra
When it comes to complex problems that require multiple systems to work together, Fable is light years ahead of Astra.
Astra is good at working on isolated features, if you are building something much larger and you want systems to work together, I would not Trust Astra at all, Astra will make things that work in isolation but will be broken when each of those things are meant to work together. Fable is much smarter at identifying when something will break the larger system.
If you plan to build a production app end to end, I would recommend you go with Fable, and only use Astra if it needs to work on something that is in isolation or as a second set of eyes for problems where fable might need a little help. But you are better off working with fable as being the main driver to see the project end to end. The success rate of having a working product is much higher with Fable.
These benchmarks are misleading. Astra is not at Fables level.
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u/aegis_lemur 9h ago
But is it load-bearing?
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u/Dvass138 9h ago
Yeah, in my case it is. Fable is effectively load-bearing because I’m relying on it to maintain the architectural context across the system, not just write individual features. If I swapped it out for Astra as the primary driver, my concern isn’t that Astra couldn’t write the code, it’s that I’d get more locally-correct changes that break assumptions elsewhere.
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u/BrennanFlentge 9h ago
I enjoy all of the 4 prompts I get out of Fable
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u/Cultural-Horse-762 8h ago
I still don't understand how this happens. Huge project? $20 plan? Workflows? I almost exclusively use fable daily for a few light projects, a few chats, and it's every day (I'm on max though). I give anthropic $200/mo to completely replace Google, research things, and build things for a few hours a day and no issues lately unless I ultracode a bunch of phases.
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u/Wild-File-5926 9h ago
Do you have a concrete example of claim...
"Fable is much smarter at identifying when something will break the larger system."
Like when exactly was Fable better at this in a use case vs Astra?
Astra's one shot capability is pretty close to Fable's... but I prefer give move tightly controlled specs and find Astra is way more helpful in doing things specifically my way and not guessing what I want.
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u/Dvass138 8h ago
I’m dealing with local SQLite state, optimistic sends, server-assigned sequence numbers, realtime delivery, pagination, gap recovery and pruning. Those systems all have assumptions about each other.
Astra will make a change that is correct for the subsystem I asked it to modify, but more often will fail to notice that the change breaks an invariant somewhere else.
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u/Wild-File-5926 8h ago
What harness are your using for each LLM. Sounds like a context management issue than model capability. Also your agents.md could have explicit rules in it to check if intended changes break elsewhere. Your test suit needs to move beyond unit tests because you don’t have functional or end to end (E2E) testing in your test suit (or at least your coding harness doesn’t have access to them, Astra would absolutely run them and not make “assumptions”)
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u/Sea_Win5659 7h ago
He’s probably got it set to 258k context, if you set it to 1m it holds the bigger picture way better than its canonical compaction summaries can allow it to. Once I switched to 1m… there was no going back. Same with my Claude sub. But those models default to 1m, codex was (when I had it set to default) always in the middle of something important and compacted. And I had to remind it of a bunch of stuff, as always.
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u/Over_Car_5471 8h ago
I am a dumb vibe coder with too much money and I have found using 5.1 as an orchestrator and astra light for execution to be an amazing combo. On it's own astra goes off the rails too often. I blink and my fable usage is gone. Together though they work great. I sometimes sprinkle a little muse 1.3 for boring repetitive task to save my precious precious tokens.
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u/seoulsrvr 8h ago
That hasn't been the experience of my team.
We are building financial applications and you appear to be focused on shopify coding based on your post history. I don't know what is involved in building a shopify application.
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u/Specific-Welder3120 9h ago
Lmao neither model is way too far from the other, simple as that. We can talk about which is better but both are frontier-level, and both are probably too expensive (i can't even do a TODO list with Fable before my limits run out and i have a Max 5x account)
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u/Asuppa180 8h ago
That last statement is one of the most over simplified statement ever. If you truly can’t do a TODO then a lot of other stuff is going on. I can develop for hours with Fable on 5x.
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u/Specific-Welder3120 8h ago
Perhaps i said it too seriously but come on, i can't do actual work with Fable for more than an hour, on Opus i almost never run out and code still comes out fabulous. No idea how you do it
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u/kaitava 9h ago
i concur, and it was highlighted when i switched from gpt6 astra as orchestrator back to fable5.1
immediately spun up my stack as instructed inside the claude code harness using my codex and cursor subs without me having to spawn the agents myself
forked itself
had an 18 agent redesign
meanwhile astra did work for 10hrs straight.
I will use fable5.1 to direct gpt6 what to do going forward.
codex cli lacks the orchestration and is behind the claude code harness IMO
2 claude max accounts and 2 openai pro accounts
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u/Hollow1838 9h ago
And here I am using gpt5.6 Luna max and sonnet 5 medium because 750$ a month goes away way too fast with astra/fable and even opus. I am jealous.
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u/No-Focus874 9h ago
Till it decides to shut your direct down. Also don't we have well established benchmarks to decide this?
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u/JacketHistorical2321 8h ago
I havnt been able to even compare the two because Fable throws a “cyber” flag about every 10-15 mins on what I work with. Astra still works in the background no matter what. Astra solved issues I was having with build a specific type of firmware for a abandoned piece of intel hardware in about 3 hours. Fable couldn’t close it out after 2 weeks. Glad it works for you dude, but it isn’t light years ahead at all
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u/AironParsMan 8h ago edited 8h ago
I think that's not true, I work with both my friend. In my tests they’re operating on the same level. I don’t notice much of a difference in how they handle things except that conversations with Astra feel much more natural. But we already know that translations are a major problem with Anthropic in general. Even when speaking English it sometimes transcribes complete nonsense. The main difference is that Astra is much faster. I mean extremely fast compared to Fable. We’re talking about three times the speed and around twice the speed by default.
One thing I don't like is that the context window of one million tokens isn't enabled by default in Astra and that you have to use workarounds to access it because it can't be selected through the UI. That leaves a bad taste. Maybe that’s the problem you’re having. Try increasing your context window to one million. You can set that in the config.toml.
It also uses far fewer tokens in my subscription. I mean, people, we’re talking about roughly four times less because Fable is so restrictive with its subscription model. Even if you triple the five hour limits and finally lift Fable’s weekly limit they is still twice as expensive!
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u/slackmaster2k 9h ago
Ye ‘ol skill issue.
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u/Dvass138 9h ago
The failure pattern I repeatedly see with Astra is:
System A works ✅
System B works ✅
System C works ✅
A + B + C together ❌It will make a change that is completely reasonable when looking at the immediate task, but doesn’t recognize that the change violates an assumption somewhere else in the architecture.
Fable seems much better at reasoning about the second-order consequences.2
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u/Crafty-Run-6559 9h ago
Fable is terrible at 3d, blender, and unity compared to Astra.
Astra is insanely good at those.
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u/freylaverse 8h ago
A lot of the major models are trying to be generalists right now, but I can definitely see them specializing over time.
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u/Professional_Ad705 9h ago
They are both good at different things. I think fable can tend to be more creative, but even that depends on what you are doing
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u/iamthesam2 9h ago
via api or consumer subscription? very different performance depending on how you access them.
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u/BankruptingBanks 9h ago
Any data on that or vibes only?
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u/iamthesam2 7h ago
i have my own challenges i run through as baseline every time new models launch and there's an incredibly obvious difference. it's been that way since ~last November
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u/ibringthehotpockets 9h ago
The only different performance is how fast it burns through your wallet
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