Anthropic launches Opus 5
Quick Answer
Anthropic has launched Opus 5, outperforming Fable 5 on benchmarks while being cheaper and less restrictive.
Quick Take
It features improved verification capabilities and reduced engagement of safety classifiers, making it more user-friendly.
Key Points
- Opus 5 is cheaper and less restrictive than Fable 5.
- It outperforms Fable 5 on several benchmarks.
- Opus 5 has a lighter touch with safety classifiers, engaging 85% less often.
- Users can opt-in for Automatic Fallbacks to avoid error messages.
- Opus 5 is free from the 30-day data retention policy affecting Fable.
DeepSignal Analysis
What happened
Anthropic has introduced Opus 5, a new model that is smaller than Fable 5 but offers better performance on various benchmarks. It is expected to be more cost-effective and less restrictive, enhancing user experience. Opus 5 also features improved verification capabilities and a reduction in safety classifier engagement.
Key evidence
- Opus 5 outperforms Fable 5 on several benchmarks, indicating superior performance in specific tasks.
- The new model is expected to engage safety classifiers 85% less often compared to Fable 5, suggesting a more user-friendly approach.
- Opus 5 is not subject to the 30-day data retention policy that applies to Fable and Mythos, addressing privacy concerns for users.
Why it matters
The launch of Opus 5 could shift user preferences towards more efficient and cost-effective AI models. Its enhanced verification capabilities may lead to better outcomes in tasks requiring precision, such as computer vision. Additionally, the reduction in safety classifier engagement may improve usability, making it more appealing for developers and businesses looking for practical AI solutions.
What to watch
📖 Reader Mode
~2 min readOn Friday, Anthropic launched its Opus 5 model, the newest version of its long-standing heavyweight model. While smaller than Fable 5, the model will be both cheaper and less restrictive than Fable, likely making it preferable in most use cases.
Notably, Opus 5 actually outperforms Fable 5 on a number of benchmarks included in the announcement.
Opus 5 is launching only two months after Opus 4.8, which became available on May 28. Mythos 5, Fable 5 and Sonnet 5 all launched in June, leaving only the lightweight Haiku model still waiting for an upgrade to the 5 series.
In a post announcing the new model, Anthropic emphasized that Opus 5 was “much stronger at verifying its work and iterating carefully until it succeeds,” citing benchmark testing, in which Opus 5 wrote its own computer vision pipeline in response to an incomplete prompt, among other examples.
Crucially, Opus 5 is also free from many of the restrictions that have dogged Fable since its release. Like its predecessor, Opus 5 is not subject to the 30-day data retention policy that covers Fable and Mythos, which had raised concerns among some privacy conscious users.
There are still meaningful safeguards on Opus, particularly around cybersecurity tasks like exploit generation and penetration testing. For instance, Opus 5 safeguards prevent it from being used to scan for vulnerabilities in a software binary, although it is permitted to search for vulnerabilities in source code, since the latter task is more likely to be used for defensive purposes.
Broadly, Anthropic expects these classifiers to engage 85% less often for Opus 5 than they will for Fable 5, a reflection of the lighter touch given to the less capable model.
Anthropic is also rolling out a new tool to make the safeguards less disruptive when they do engage. Users can now opt-in to a beta feature called Automatic Fallbacks, which will automatically route requests to a less powerful model when a prompt triggers the safety classifier. The result is that API users with the setting engaged will get a functional response instead of an error message.
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.
Russell Brandom has been covering the tech industry since 2012, with a focus on platform policy and emerging technologies. He previously worked at The Verge and Rest of World, and has written for Wired, The Awl and MIT’s Technology Review. He can be reached at russell.brandom@techcrunch.com or on Signal at 412-401-5489.
— Originally published at techcrunch.com
Want this in your inbox every morning?
Daily brief at your local 8am — bilingual EN/中文, free.
More from TechCrunch
See more →
AI chip startup Etched defies skeptics, hits $10.3B valuation from big-name investors
AI chip startup Etched has achieved a $10.3 billion valuation after a $300 million Series C funding round, led by Sequoia and supported by notable investors like Andreessen Horowitz. The company claims to have developed innovative low-voltage chips for AI inference, significantly enhancing performance and reducing costs, with $1 billion in orders already booked.
