Anthropic releases Claude Sonnet 5.5 for coding and professional tasks
Sonnet 5.5 updates Sonnet 5, with faster output and improved coding and office work at the same base API token prices.
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Related English reports
English reports linked to this entity will appear here as their translations are published.
AI-generated
Anthropic reports Claude-assisted discovery of the ART enzyme system
Claude identifies a reverse-transcriptase system with CRISPR-like repeats; scientists perform early experiments while its primary function remains unknown.
Anthropic announces Enterprise Frontier Safeguards (EFS)
On September 1, 2026, Anthropic announced Enterprise Frontier Safeguards (EFS), a solution combining zero data retention (ZDR) privacy with state-of-the-art misuse-detection safeguards. EFS stores monitoring data in customer-controlled cloud infrastructure rather than on Anthropic systems, and will roll out to customers in phases starting later this fall.
Anthropic releases Claude Fable 5.1
Anthropic releases Claude Fable 5.1 publicly on September 1, 2026, for long-horizon agentic coding, deep reasoning and multistep scientific research.
Anthropic announces text watermarking for future Claude models
Anthropic announced that future Claude models will add an invisible text watermark to meet EU AI Act content-marking requirements, without adding tokens, cost, or user-identifying information.
Anthropic releases Claude Opus 5
Anthropic releases Claude Opus 5, with upgrades in deep reasoning, long-running agentic coding, vision, professional knowledge work and multi-agent collaboration.
Anthropic extends Fable 5 offer as OpenAI relaxes GPT-5.6 limits
Anthropic extends its Fable 5 promotion to July 19; 58 minutes later, OpenAI resets Codex and ChatGPT Work limits and temporarily removes a five-hour cap.
Claude Cowork expands to web and mobile
Claude Cowork is expanding to web and mobile, allowing delegated tasks to continue when users leave their computers and to resume across devices.
Anthropic restores global access to Claude Fable 5
Anthropic restored global access to Claude Fable 5 on July 1 after the U.S. government lifted the export controls that had forced a temporary shutdown.
Anthropic releases Claude Sonnet 5
Anthropic releases Claude Sonnet 5 with stronger agent planning, tool use, coding, knowledge work and long-running autonomous execution.
Anthropic suspends access to Claude Fable 5
A U.S. export-control directive barred foreign nationals from Fable 5 and Mythos 5, leading Anthropic to suspend access for every customer because it could not verify nationality in real time.
Anthropic launches Claude Fable 5
Anthropic launched Claude Fable 5 as a Mythos-class model adapted for general use through a conservative runtime safety system.
Anthropic releases Claude Opus 4.8
Anthropic releases Claude Opus 4.8 with continued gains in coding, agents, vision and professional knowledge work, while reducing unsupported conclusions in long tasks.
Anthropic calls for tighter AI export controls and action on distillation
Anthropic published a policy piece arguing for closing chip and offshore-compute loopholes, restricting frontier-model access, and curbing model-distillation attacks.
Anthropic releases Claude Opus 4.7
Anthropic releases Claude Opus 4.7 with improvements in advanced software engineering, long-running agent tasks, high-resolution vision and professional content creation.
Anthropic adds identity checks for selected Claude use cases
Claude asks some users in fraud, abuse or capability-sensitive scenarios to submit ID and a selfie video through Persona.
Anthropic opens Claude Mythos Preview to Project Glasswing partners
Anthropic opened Claude Mythos Preview to a screened set of Project Glasswing partners for finding and fixing critical software vulnerabilities.
Court pauses federal restrictions on Anthropic
The U.S. District Court for the Northern District of California issued a preliminary injunction pausing the supply-chain-risk finding against Anthropic and the related directives.
Anthropic sues the Trump administration
Anthropic filed suit in the U.S. District Court for the Northern District of California, challenging the supply-chain-risk finding and the related federal restrictions.
Trump orders federal agencies to stop using Anthropic technology
President Trump directed federal agencies to stop using Anthropic technology; the GSA then removed the products from USAi.gov and federal procurement catalogs.