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github

Claude Opus 5.5 is now available in GitHub Copilot

githubchangelogRelease

about 4 hours ago▲ 56

Read story→

hackernews

Claude Opus 5.5 Intelligence, Performance and Price Analysis (Max)

hackernews

about 4 hours ago▲ 56

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techmeme

Anthropic says Opus 5.5 matches Fable 5.1 "on most tasks" while costing about 40% less to run than Opus 5; Opus 5.5 costs $4/1M input and $20/1M output tokens (Matthias Bastian/The Decoder)

industry

about 4 hours ago▲ 24

Read story→

techmeme

Anthropic launches Claude Opus 5.5, its first model since Dario Amodei's "pace the frontier" essay, and says it has enhanced safeguards to combat risky behavior (Emma Roth/The Verge)

industry

about 4 hours ago▲ 24

Read story→

rss

Anthropic releases Opus 5.5 with lower prices and Fable-level performance

techcrunchindustryAI

about 4 hours ago▲ 44

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rss

Anthropic launches Claude Opus 5.5 with stricter safeguards for cybersecurity

the-vergeindustryAI

about 4 hours ago▲ 44

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hackernews

Claude Opus 5.5

hackernews

about 4 hours ago▲ 246

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techmeme

Xiaomi debuts open-weight omnimodal models MiMo-V2.6 Pro and Flash; Pro allegedly performs "on par with Opus 5 and GPT-5.6 Sol across most agent benchmarks" (Xiaomi)

industry

about 23 hours ago▲ 24

Read story→

hackernews

Show HN: CUA-S1 – A System One Model for Computer Use

hackernews

3 days ago▲ 6

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rss

Security researchers used Claude to help them hack into OpenAI

the-vergeindustryAI

4 days ago▲ 44

Read story→

techmeme

Security researchers in an OpenAI bug bounty program hacked OpenAI, accessing its "monorepo" on GitHub, using a cybersecurity version of Opus 4.8 and Opus 5 (Robert McMillan/Wall Street Journal)

industry

5 days ago▲ 24

Read story→

arxiv

Playing log(N)-Questions over Wikipedia Abstracts: Communication Efficiency Between Paired Frontier Models

arxivcs.CLpublisher:arxiv

6 days ago▲ 43

Read story→

techmeme

Google gives all of its engineers Claude Opus 5 access via Antigravity, and says "Gemini remains our primary and foundational model for internal development" (Hugh Langley/Business Insider)

industry

8 days ago▲ 24

Read story→

hackernews

Notes on gotchas while migrating 35kb preprompts from Opus to self-hosted Ollama

hackernews

8 days ago▲ 18

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techmeme

Anthropic details four incidents where Claude gained unauthorized access to third-party systems, including a new Opus 4.6 case; METR will investigate them (Anthropic)

industry

13 days ago▲ 24

Read story→

github

Project HydraFusion: Frontier quality via multi-model orchestration

hackernewsgithubdeveloper-news

18 days ago▲ 56

techmeme

Artificial Analysis Coding Agent Index: GPT-6 Astra scored 67, roughly equal to Claude Opus 5, Fable 5, and Muse Spark 1.3, but trailing leader Fable 5.1's 70 (Artificial Analysis)

industry

18 days ago▲ 24

Read story→

techmeme

GPT-6 Astra scores 62.7% on ARC-AGI-3 with the standard harness and 99.9% with a new provider adapter harness; Claude Opus 5 scored 30.2%, and GPT-5.6 Sol 7.8% (Greg Kamradt/ARC Prize)

industry

19 days ago▲ 24

Read story→

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News matches

Claude Opus 5.5 is now available in GitHub Copilot

Claude Opus 5.5 Intelligence, Performance and Price Analysis (Max)

Anthropic says Opus 5.5 matches Fable 5.1 "on most tasks" while costing about 40% less to run than Opus 5; Opus 5.5 costs $4/1M input and $20/1M output tokens (Matthias Bastian/The Decoder)

Anthropic launches Claude Opus 5.5, its first model since Dario Amodei&apos;s "pace the frontier" essay, and says it has enhanced safeguards to combat risky behavior (Emma Roth/The Verge)

Anthropic releases Opus 5.5 with lower prices and Fable-level performance

Anthropic launches Claude Opus 5.5 with stricter safeguards for cybersecurity

Claude Opus 5.5

Xiaomi debuts open-weight omnimodal models MiMo-V2.6 Pro and Flash; Pro allegedly performs "on par with Opus 5 and GPT-5.6 Sol across most agent benchmarks" (Xiaomi)

Show HN: CUA-S1 – A System One Model for Computer Use

Security researchers used Claude to help them hack into OpenAI

Security researchers in an OpenAI bug bounty program hacked OpenAI, accessing its "monorepo" on GitHub, using a cybersecurity version of Opus 4.8 and Opus 5 (Robert McMillan/Wall Street Journal)

Playing log(N)-Questions over Wikipedia Abstracts: Communication Efficiency Between Paired Frontier Models

Google gives all of its engineers Claude Opus 5 access via Antigravity, and says "Gemini remains our primary and foundational model for internal development" (Hugh Langley/Business Insider)

Notes on gotchas while migrating 35kb preprompts from Opus to self-hosted Ollama

Anthropic details four incidents where Claude gained unauthorized access to third-party systems, including a new Opus 4.6 case; METR will investigate them (Anthropic)

Project HydraFusion: Frontier quality via multi-model orchestration

Artificial Analysis Coding Agent Index: GPT-6 Astra scored 67, roughly equal to Claude Opus 5, Fable 5, and Muse Spark 1.3, but trailing leader Fable 5.1&apos;s 70 (Artificial Analysis)

GPT-6 Astra scores 62.7% on ARC-AGI-3 with the standard harness and 99.9% with a new provider adapter harness; Claude Opus 5 scored 30.2%, and GPT-5.6 Sol 7.8% (Greg Kamradt/ARC Prize)

Anthropic launches Claude Opus 5.5, its first model since Dario Amodei's "pace the frontier" essay, and says it has enhanced safeguards to combat risky behavior (Emma Roth/The Verge)

Artificial Analysis Coding Agent Index: GPT-6 Astra scored 67, roughly equal to Claude Opus 5, Fable 5, and Muse Spark 1.3, but trailing leader Fable 5.1's 70 (Artificial Analysis)