Claude Opus 5.5 delivers Fable 5.1 performance – and costs 40% less
Source: ZDNet ·
Anthropic’s newest Claude model aims to make frontier AI cheaper, faster, and safer, while giving subscribers more breathing room before those frustrating usage limits kick in.
From the source
Less than two months after the release of Claude Opus 5, Anthropic is back with Opus 5.5. The big pitch for Opus 5 was that it had “near Fable” performance at half the price. This time, the headline is that the workhorse AI Opus 5.5 delivers Fable 5.1 performance for most work and costs about 40% less to run. “Our customers use Box AI on enormous amounts of content, so speed and cost are a top priority,” Yashodha Bhavnani, VP of AI Products at Box, reports. “In our evaluations, Claude Opus 5.5 used a third of the tokens Opus 5 did, and its answers were 40% less verbose without losing accuracy. We expect that to matter a lot for teams running agents across their content in areas like financial services and the public sector.” Anthropic says that, “Over the coming weeks, we’ll also be launching Claude Sonnet 5.5 and Haiku 5.5.” Opus 5.5 is available today. I’ve been using the heck out of Claude Code with Opus 5, so I’m particularly hopeful that the company’s performance claims are…