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Opus 5.5: Product Launch Data

Associated companies: Anthropic (Compare product launches)

Anthropic's late September 2026 update to the Opus LLMs series.

Explore related trends

Implements
LLM
Related topics
AI Agents
Tracked keywords: Opus 5.5

X / Twitter Mentions Over Time

The current month is a linear estimate of full-month mentions and content items, based on 13 of 30 calendar days. Totals and company counts use recorded activity, including this month. Forecast growth compares the estimate with the preceding completed month.

154
Total Mentions (recorded)
139
Posts mentioning Product
51
Companies Mentioning
88
Most mentions in a month
Month Mentions Posts Companies MoM Change
Nov 2026 (projected) 13/30d ~44 19 actual ~42 18 actual 12 Forecast -6.4%
Oct 2026 47 41 23 -46.6%
Sep 2026 88 80 41 --
Aug 2026 0 0 0 --

Recent X / Twitter posts on Opus 5.5

50 items
DateCompanyTitleAccountMentions
Nov. 12, 2026 NeuralTrust Anthropic launched Claude Fable 5.2 on Nov 9: #1 on Artificial Analysis, 20% cheaper than… Company 1
Nov. 12, 2026 Parallel Web Systems RT @p0: Fable 5.2 (@AnthropicAI) has reclaimed the #1 spot on Parallel's Search Capabilit… Company 1
Nov. 11, 2026 Vals We’ve adding a new cybersecurity scenario, Watershed, to our CyberOffense eval. Opus 5.5… Company 1
Nov. 11, 2026 AI21 Labs 👉 We brought years of model post-training expertise. 👉 @emetbydeel brought leading payro… Company 1
Nov. 11, 2026 Parallel Web Systems Fable 5.2 (@AnthropicAI) has reclaimed the #1 spot on Parallel's Search Capability Leader… Company 1
Nov. 10, 2026 Baseten Genspark and Baseten Applied Research post-trained an open-weight model that beats Opus 5… Company 2
Nov. 10, 2026 Vals Claude Fable 5.2 is #1 on our RSI Index (37.8) narrowly ahead of Claude Opus 5.5 at 37.3 … Company 1
Nov. 10, 2026 Vals Claude Opus 5.5 with Parallel Fast is now #1 on the Vals Web Search Index, scoring 57.5% … Company 1
Nov. 10, 2026 Parallel Web Systems RT @ValsAI: Claude Opus 5.5 with Parallel Fast is now #1 on the Vals Web Search Index, sc… Company 1
Nov. 6, 2026 Arize Qwen3.8 Flash is 30x to 40x cheaper per token than Opus 5.5. In a manager/worker loop on … Company 1
Nov. 6, 2026 Better Stack We built a 3D-printed robot arm with one job: spotting your raised palm and giving you a … Company 1
Nov. 6, 2026 Featherless Full write-up on what changed in K3.1 Pro: sparse attention, how it stacks up against Opu… Company 1
Nov. 6, 2026 OpenRouter Introducing our next generation of model routers: Auto Router for general q&a + agen… Company 1
Nov. 4, 2026 Baseten Baseten Router cuts coding costs by 72% vs. Opus 5.5 on our benchmarks and beats random r… Company 1
Nov. 2, 2026 Merge Google takes the top spot: Gemini 4 Carbon (@GoogleDeepMind) leads the new Artificial Ana… Company 1
Nov. 2, 2026 Bubble RT @0xMovez: this is crazy... the guy reverse-engineered his Meta Ray-Bans 3 with Opus 5… Company 1
Nov. 1, 2026 OpenRouter RT @PeterJ_Walker: New from OpenRouter: 7-day average token volume for Anthropic models i… Company 1
Nov. 1, 2026 Incident.io RT @evnsio: "The models will get cheaper". Seems to provably be the case with Opus 5.5,… Company 1
Oct. 28, 2026 Cline Gemini 4 Carbon is the first model to surpass Claude and GPT, and beats Opus 5.5 on nearl… Company 1
Oct. 28, 2026 GitHub Frontier performance at a fraction of the cost. In the @ArtificialAnlys Coding Agent In… Company 1
Oct. 28, 2026 Replit Today we're releasing ViBench 2.0, a benchmark for long-horizon software building. Agents… Company 1
Oct. 27, 2026 PostHog New eval just dropped: make a bar chart of the PostHog logo, in PostHog. First results f… Company 1
Oct. 25, 2026 Parallel Web Systems Kimi K3.1 Pro is #2 on the Parallel Search Capability Leaderboard. It's a step up on the… Company 1
Oct. 23, 2026 Cline Kimi K3.1 Pro nearly matches Opus 5.5 performance on Terminal-Bench 4.0 at *half* the cos… Company 1
Oct. 22, 2026 Vals Liquid AI's d1-ultra is the only decision model to get all 1,960 ClaimBench claims right.… Company 1
Oct. 21, 2026 Jam RT @kippe07: pretty neat what can be done with agents today this animation is built enti… Company 1
Oct. 21, 2026 Merge Open-weights models beat every closed model on long documents: Kimi K3 scores 88.7% on AA… Company 1
Oct. 20, 2026 Google Cloud Claude 5.5 meets Google Antigravity! 🚀 Google Cloud customers can now access Claude Opus… Employee 1
Oct. 20, 2026 Google Cloud Claude 5.5 meets Google Antigravity! 🚀 Google Cloud customers can now access Claude Opus… Employee 1
Oct. 19, 2026 Lovable App idea: photograph any menu, map dishes and drinks by taste to find out what suits your… Company 1
Oct. 15, 2026 OpenRouter Claude Opus 5.5, Gemini 4 Argon and GPT-6 Astra each rebuilt the same Royale: Last Agent … Company 1
Oct. 15, 2026 Featherless Step 5 Preview is here. @StepFun_ai's new open-weights model sets a new Pareto frontier,… Company 1
Oct. 15, 2026 Vals RT @nikilravi: It also outperformed Opus 5.5, GPT 6 Sol on reverse engineering tasks http… Company 1
Oct. 14, 2026 Merge The two top models on the Intelligence Index take about twice as long per task: Claude Op… Company 2
Oct. 14, 2026 Cline Gemini 4 Argon had the best launch day user share of any frontier model on Cline since Ju… Company 1
Oct. 14, 2026 Surge AI We've added Gemini 4 Argon and Muse Wonder to the sudo L7 leaderboard: Gemini 4 Argon: 1… Company 1
Oct. 13, 2026 OpenRouter OpenRouter users are loving Anthropic's Opus 5.5 It is the #1 model in share of spending… Company 1
Oct. 13, 2026 Cursor Gemini 4 Argon is now available in Cursor! It scores 52.8% on CursorBench at default eff… Company 1
Oct. 13, 2026 JetBrains Gemini 4 Argon is officially live! @kristel_tech tasked two agents with building a web-s… Company 1
Oct. 13, 2026 Cline Gemini 4 Argon is #1 on Val Index, completing agentic tasks at half the cost of Opus 5.5.… Company 1
Oct. 12, 2026 OpenRouter RT @PeterJ_Walker: New from OpenRouter: Anthropic's Opus 5.5 has propelled them back abov… Company 1
Oct. 12, 2026 Merge @Meta's new Muse Wonder Full debuts third on the Intelligence Index at 55.8, just 0.2 beh… Company 1
Oct. 9, 2026 Vals Do agent teams pay off? We ran GPT-6 Sol and Claude Opus 5.5 on Vibe Code Bench, alone … Company 1
Oct. 8, 2026 Merge Which model uses MCP tools best? We tested 6 models on the same 30 multi-step tasks, usi… Company 1
Oct. 8, 2026 Google Cloud Gemini Agent is built for high-ceiling work where EACH task gets its own computer. You… Employee 1
Oct. 7, 2026 Modem Opus 5.5 and Sonnet 5.5 from @AnthropicAI are now available in Modem. Pick the model tha… Company 1
Oct. 7, 2026 LlamaIndex Today we're announcing OpenDocRouter: every model for document parsing under one API. Th… Company 1
Oct. 6, 2026 Braintrust We ran evals on Opus 5.5 and new GPT-6 models to assess both problem solving and writing … Company 2
Oct. 6, 2026 Stream RT @stefanjblos: I wanted to see if a local model can ACTUALLY beat Opus 5.5 at certain t… Company 1
Oct. 6, 2026 Anthropic We’re expanding our Cyber Verification Program to give security professionals broader acc… Company 1
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