GPT 6 Astra doesn’t need another prompt
It needs an execution loop that knows when its own work is wrong
Most people build AI agents that complete a task, return an answer and stop
But what happens when the code fails, the output is incomplete or the agent confidently makes the wrong decision?
That’s where the architecture gets interesting
I mapped out an Astra execution loop with separate layers for planning, coding, testing and verification
→ PLAN breaks the objective into executable tasks
→ CODE turns those tasks into actual changes
→ TEST runs checks instead of trusting the generated output
→ VERIFY decides whether the result is acceptable or needs another pass
The critical part is the feedback
A failed test shouldn’t just produce another paragraph explaining what went wrong
It should become new information the agent uses on its next attempt
And every iteration should leave behind evidence of what changed, what passed and what still needs attention
The real bottleneck in autonomous coding isn’t generating more code
It’s knowing when the work is actually finished
Save this architecture before building your next AI agent
THIS IS A PURE F*CKING GOLDMINE
Anthropic just shared one of the best tricks for Claude Code: one model plans, a swarm executes, and nobody waits for anybody
Opus 5.5 reads the task once, cuts it into 12 parallel lanes and then stops spending tokens entirely
Haiku 4.5 takes everything mechanical, Sonnet 5.5 takes the few pieces that actually need judgment
most setups die because the expensive model watches the work happen, and 12 agent transcripts in its context is how $12 disappears on a single task
here the planner never reads raw output, every agent reports one line and the whole session stays under 9k of context
a hard spend cap sits on the run, so one stuck agent cannot quietly eat the budget
nothing gets reported until it passes its own check, and anything that fails re-runs in its own lane instead of landing back on the planner
the planner comes back once at the end, reads 12 verified results and signs off, 2 minutes and 28 cents for the whole thing
save it, this is the difference between burning your budget and finishing the job