What happened
Alex Albert says robotics will follow the bitter lesson, linking to a post from Claude AI. The cited post says Fable 5.2 improved at controlling physical robots, including on tasks it had never explicitly been trained to do, and outperformed other models and most AI systems built to control robots on RoboDojo, a simulated two-arm robot benchmark.
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See the full storyAnthropic Releases Claude Fable 5.2 and Mythos 5.2 with Lower API Pricesbtw robotics will fall to the bitter lesson too twitter.com/claudeai/status/2…
View the quoted post on XFable 5.2 shows substantially improved skills in controlling physical robots, even on tasks it has never explicitly been trained to do.
On RoboDojo, a benchmark with a simulated two-arm robot, it outperformed other models and most AI systems built to control robots.
The story so far
Anthropic released Claude Fable 5.2 and Claude Mythos 5.2, lowering API prices to $8 per million input tokens and $40 per million output tokens, from $10 and $50. Anthropic says both models improve coding, reasoning, and vision, and that Fable produces responses faster than version 5.1. Fable is available to paid users with safeguards for risky cybersecurity and biology tasks; Mythos is limited to organizations approved through Anthropic’s verification programs. The launch reports cite strong benchmark results, including Fable’s first-place score on Artificial Analysis’ Intelligence Index v5 at its highest compute tier. Those figures come from the named benchmark evaluations; Anthropic’s prerelease examples also include software migrations, electronic devices, and physics problems. TechCrunch reports that an optional faster serving mode costs twice as much, while the lower API prices apply to standard use.
How the story developed · 7
View full event- 11/10 05:37 (UTC+8)Anthropic’s Claude Fable 5.2 and Mythos 5.2 Reclaim the AI Performance LeadThe Decoder
- 11/10 04:25 (UTC+8)AWS Announces Claude Fable 5.2 and Mythos 5.2 AvailabilityAWS Machine Learning Blog
- 11/10 04:01 (UTC+8)Anthropic Releases Mythos 5.2 and Fable 5.2 Amid RSI ConcernsTechCrunch · AI
- 11/10 03:48 (UTC+8)Anthropic Introduces Claude Fable 5.2 and Claude Mythos 5.2Boris Cherny · X
- 11/10 03:47 (UTC+8)Claude Fable 5.2 Reaches Perplexity Computer and SearchPerplexity · X
- 11/10 03:47 (UTC+8)Artificial Analysis Reports Claude Fable 5.2 Leads Its Intelligence IndexArtificial Analysis · X
- 11/10 03:47 (UTC+8)
Alex Albert Says Robotics Will Follow the Bitter Lesson This report