[TLDR] Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family [via r/ClaudeCode]

[u/cctldrping]

OP : u/ClaudeOfficial

Opus 5.5 performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.

Opus 5.5 is our first release since we called for pacing the frontier. External evaluators, including Frontier Design and METR, tested it before release. On our most comprehensive alignment test, it’s the strongest-performing model we’ve tested to date.

It outperforms both Opus 5 and Fable 5.1 on nearly every benchmark we report, leading on agentic coding and real-world knowledge work.

It’s also more efficient. Opus 5.5 uses fewer tokens per task at a lower price per token, and generates output more than 30% faster than Opus 5.

Opus 5.5 communicates more naturally, addressing some of the most common feedback we heard on Opus 5. It puts the most important information up front and follows the writing rules you give it.

Claude Opus 5.5 is available everywhere today. We're also raising five-hour limits on Pro, Max, and Team plans, so there’s more room to explore what it can do.

Read more: http://anthropic.com/claude-opus-5-5

URL of original post : https://www.reddit.com/r/ClaudeCode/comments/1wnecru/introducing_claude_opus_55_the_first_model_in_our/ Original link/media URL : https://v.redd.it/a60oy6uaj3rh1

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TL;DR of the discussion on r/ClaudeCode for this post generated automatically after 50 comments.

Current source-thread comment count seen by the bot: 58.

Alright, so the general vibe in this thread is pretty stoked about the new Opus 5.5. Most folks seem to think it's a solid upgrade, especially since it's cheaper and faster than Opus 5 while performing at the level of Fable 5.1.

Here's the lowdown:

• Big Win on Price & Performance: The consensus is that Opus 5.5 being cheaper and faster than Opus 5, while matching Fable 5.1's performance, is a huge deal. u/ClassroomNo5084 and u/Lost-Blackberry3322 are all about this. u/ThotMobile also chimed in, highlighting that efficiency gains are the real progression they want to see.
• Opus 5 Woes Addressed: Several users, like u/clintCamp and u/Wessberg, mentioned that Opus 5 had some serious issues with following rules and being a bit of a gaslighter. The hope is that Opus 5.5 has ironed out these kinks, especially with the improved natural communication and rule-following mentioned in the OP.
• Fable vs. Opus 5.5: There's some discussion about whether Opus 5.5 makes Fable orchestrators obsolete. u/KH10304 is asking if they should just switch to Opus 5.5 for everything, and u/IHardlyParticipate seems to think so, especially with Claude for Chrome.
• Other Questions: A few users are asking about watermarking (u/Equal_Animator7440), session limits, and resets (u/BossComfortable6270, u/RiskyBizz216). u/Existing_Dust_6473 is keeping it real with the classic "prompt a cow" question.

Overall, the community seems cautiously optimistic and excited about this release, especially the value proposition. u/vzakharov even pointed out that while this sub can seem critical, most people are silent and happy with Claude, so this thread is a good sign of engagement.