XX / Twitter50
listening to
Opus 5.5 official announcement
50
mentions
tracked
tracked
net sentiment
+26%
16 positive
31 neutral
3 negative
volume & sentiment over time
Jul 3 – Sep 27, 2026 · 2-day buckets
sources
most discussed
pricing / model
active days
21
what people keep raising
- pricing / model 16
- performance / rollout 3
- anthropic / openai 2
- claude 2
mentions
Showing 1–3 of 3 mentions
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X X / Twitter 5d ▲ 0 negative pricing / model𝗖𝗹𝗮𝘂𝗱𝗲 𝗢𝗽𝘂𝘀 𝟱.𝟱 𝗜𝘀 𝗡𝗼𝘄 𝗟𝗶𝘃𝗲 𝗼𝗻 𝗕.𝗔𝗜 ⚡ https://t.co/9CKQIEP2Jz has added Claude Opus 5.5, the first model in Anthropic’s new Claude 5.5 family, to both its API and Web Chat. This model is built around a specific class of workloads: long-running Agent tasks and complex knowledge work. 🧠 Built For Long-Running Agents … 𝗖𝗹𝗮𝘂𝗱𝗲 𝗢𝗽𝘂𝘀 𝟱.𝟱 𝗜𝘀 𝗡𝗼𝘄 𝗟𝗶𝘃𝗲 𝗼𝗻 𝗕.𝗔𝗜 ⚡ https://t.co/9CKQIEP2Jz has added Claude Opus 5.5, the first model in Anthropic’s new Claude 5.5 family, to both its API and Web Chat. This model is built around a specific class of workloads: long-running Agent tasks and complex knowledge work. 🧠 Built For Long-Running Agents Claude Opus 5.5 is designed for workflows where an AI needs to work through a problem over multiple steps rather than simply answer a single prompt. Its capabilities are particularly relevant to: 🔹 Autonomous coding workflows 🔹 Complex software engineering 🔹 Long-running Agent tasks 🔹 Research and knowledge work 🔹 Computer Use It supports a 1M-token context window and up to 128K output tokens, giving developers substantial room for large codebases, documents and multi-step tasks. ⚡ More Capability, Lower Running Cost According to the supplied announcement, Opus 5.5 performs around the level of Claude Fable 5.1 on most tasks, while costing approximately 40% less to run than Opus 5. That matters for Agentic workloads. When an Agent performs dozens—or potentially hundreds—of model calls during a workflow, inference cost becomes part of the architecture. Lower cost can therefore make longer-running workflows more practical. 🔌 Now Available Through https://t.co/9CKQIEP2Jz The bigger https://t.co/9CKQIEP2Jz story is the accessibility layer. Developers can access Claude Opus 5.5 through the https://t.co/9CKQIEP2Jz API, while regular users can also interact with it through https://t.co/9CKQIEP2Jz Web Chat. That means the same model can fit into both: Developer workflows → API → applications & Agents and Everyday workflows → Web Chat → research & knowledge work AI infrastructure is increasingly becoming about more than individual models. It is also about how easily developers can access, compare and integrate different models into the workflows they already use. 👉 Try Claude Opus 5.5: https://t.co/IE5evqOJKL 🔗 Learn more: https://t.co/49pKwxSview source ↗
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X X / Twitter 1w ▲ 1 negative anthropic / openai🚨 WAIT... OPENAI'S TUESDAY MIGHT ACTUALLY BE HAPPENING People are starting to see GPT-6 LUNA inside Codex backend responses. Requests to GPT-5.6 Luna are reportedly coming back as: gpt-6-luna and there are similar signs around GPT-6 Sol too. This is especially funny because Anthropic JUST dropped Opus 5.5 today 😭 … 🚨 WAIT... OPENAI'S TUESDAY MIGHT ACTUALLY BE HAPPENING People are starting to see GPT-6 LUNA inside Codex backend responses. Requests to GPT-5.6 Luna are reportedly coming back as: gpt-6-luna and there are similar signs around GPT-6 Sol too. This is especially funny because Anthropic JUST dropped Opus 5.5 today 😭 Anthropic really tried to hijack OpenAI's Tuesday and OpenAI said hold on... No official announcement yet. But GPT-6 Sol + Luna appearing in Codex is a pretty big sign that something is moving behind the scenes. I'm watching this one closely 👀view source ↗
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X X / Twitter 1w ▲ 7 negative pricing / modelThe official announcement. Opus 5.5 is here and it delivers Fable 5.1 performance at a cost 40% cheaper than even Opus 5. > They've lowered the API pricing since this model takes far less compute to run. > It is also 30% faster to run than Opus 5. > It talks naturally, finally fixing Opus 5's language problem BA… The official announcement. Opus 5.5 is here and it delivers Fable 5.1 performance at a cost 40% cheaper than even Opus 5. > They've lowered the API pricing since this model takes far less compute to run. > It is also 30% faster to run than Opus 5. > It talks naturally, finally fixing Opus 5's language problem BAD NEWS THO: Since this model shows similar bio & cyber capabilities, it has the same guardrails that Fable does. Overall, what a banger release. I am pumped to test it out.view source ↗