source: TechCrunch AI: Anthropic releases Opus 5.5 with lower prices and Fable-level performance
level: business
anthropic released opus 5.5 on tuesday, its most capable model tier. the company says it sets a new state-of-the-art in coding and knowledge work. opus 5.5 outperforms the larger fable model on many benchmarks and completed informal tasks that fable failed. output tokens cost $20 per million, down from $25 for the previous model. the model is also faster to run, reflecting lower compute requirements. this release comes two months after opus 5.
the new model changes communication style, using less jargon and putting key information first. anthropic says opus 5.5 is comparable to mythos in biology and cybersecurity, so it is subject to the same safeguards as fable. those safeguards limit use for discovering exploits in compiled programs or developing biological weapons. sonnet 5.5 and haiku 5.5 will follow in coming weeks with similar improvements. safety training included alignment testing and evaluation by metr and frontier design.
this is anthropic's first release since ceo dario amodei called for pacing frontier ai progress. amodei wrote that fully addressing risks requires prudence, not just investing in risk prevention but pacing capabilities advancement. anthropic emphasized that more advanced training and evaluation systems are being prepared for future models, including improved security and monitoring. the company expects to share more details soon. public policy should play a larger role in ensuring safety as ai becomes more capable.
why it matters: lower prices and higher performance make advanced ai more accessible for coding and knowledge work, while safety measures address high-risk capabilities.
source: TechCrunch AI: Anthropic releases Opus 5.5 with lower prices and Fable-level performance