Development

A frontier model more than doubles a rival on a robot arm task

development2026-09-06

Claim

Astra hit 95% on a robot arm task against Fable 5.1's 40%, and Robocurve's arms dropped a block in a bowl 19 times in 20 against 8 at half the cost, though Claude Opus 5 still leads on circuit boards.

Reported metric: 95% vs 40%

Reporting date: 2026-09-06 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

Welcome to September 6, 2026 (theinnermostloop.substack.com)

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Reported in

Welcome to September 6, 2026

Actor

Evidence for

Supersedes

A three-second demonstration teaches a new physical task with no training

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Citation formatCitation text

A frontier model more than doubles a rival on a robot arm task
Innermost Loop KB — secondary record
Reporting date: 2026-09-06
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2026-09-06-hands-catch-up-to-the-head
Claim: Astra hit 95% on a robot arm task against Fable 5.1's 40%, and Robocurve's arms dropped a block in a bowl 19 times in 20 against 8 at half the cost, though Claude Opus 5 still leads on circuit boards.
Attributed sources:
- Welcome to September 6, 2026 — https://theinnermostloop.substack.com/p/welcome-to-september-6-2026
This citation does not imply independent verification of linked-source claims.

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