Anthropic's new Fable release is cheaper, less restrictive
Anthropic has released Fable 5.1 and Mythos 5.1, updating its twin advanced artificial intelligence models with performance improvements and reduced token costs. Mythos 5.1 remains restricted to select partners in cybersecurity and life sciences research, while Fable 5.1 is broadly accessible via cloud platforms and the Anthropic API. The update also introduces zero data retention capabilities, with a high-privacy Enterprise Frontier Safeguards service launching later in the fall.
Key Takeaways
- Anthropic has officially launched Fable 5.1 and Mythos 5.1, twin updates to the company's most advanced artificial intelligence model.
Fable 5.1 is accessible immediately on cloud platforms and through the Anthropic API, bringing lower token costs and reduced false-positive safety triggers.
- As part of this release, Anthropic announced support for zero data retention, allowing enterprise clients to execute models on their own infrastructure without external data outflows.
A dedicated high-privacy offering named Enterprise Frontier Safeguards is scheduled to roll out in the fall, giving clients control over misuse monitoring.
- Prior to publication, the models generated three novel scientific findings, including a custom GPU optimization and a high-resolution map of Venus created from existing photos.
In its official system card, Anthropic classified Mythos as low-risk for self-improving automated AI development.
- Fable 5.1 offers lower token costs and fewer false-positive safeguard restrictions than previous model versions.
Access to Mythos 5.1 is restricted exclusively to registered Anthropic partners in cybersecurity or life sciences research.
- A new high-privacy service called Enterprise Frontier Safeguards will allow clients to run models locally without data outflows.
Anthropic has officially launched Fable 5.1 and Mythos 5.1, twin updates to the company's most advanced artificial intelligence model. Fable 5.1 is accessible immediately on cloud platforms and through the Anthropic API, bringing lower token costs and reduced false-positive safety triggers. Conversely, Mythos 5.1 is restricted to registered partners engaged in cybersecurity or life sciences research.
As part of this release, Anthropic announced support for zero data retention, allowing enterprise clients to execute models on their own infrastructure without external data outflows. A dedicated high-privacy offering named Enterprise Frontier Safeguards is scheduled to roll out in the fall, giving clients control over misuse monitoring. According to Anthropic, the new releases set benchmarks on Terminal-Bench 4.0 for CLI-based coding and Humanity's Last Exam for general reasoning.
Prior to publication, the models generated three novel scientific findings, including a custom GPU optimization and a high-resolution map of Venus created from existing photos. In its official system card, Anthropic classified Mythos as low-risk for self-improving automated AI development. Although the card notes that Mythos 5.1 shows a slight regression on misaligned behavior compared to Opus 5, it represents an improvement over Mythos 5 and Claude Sonnet 5 by being less prone to hallucinating inputs or ignoring explicit constraints.
For more details please read the original article at TechCrunch AI.
Continue Learning
Comments
Comments appear only after moderation. Your email identifies your submission to the moderator and is never displayed here.
No approved comments yet.