SAN FRANCISCO, CA — In an unprecedented development that completely reshapes the competitive artificial intelligence landscape, Anthropic today Global Tech News and Reviews announced a massive dual-release event. The company has officially deployed Claude Sonnet 5 globally as the new default model across all user tiers. Concurrently, Anthropic has restored global access to its ultra-advanced flagship model, Claude Fable 5, following a tense, high-stakes standoff with federal regulators over national security and export controls.

The coordinated rollout marks a distinct paradigm shift in the AI industry. The market is aggressively pivoting away from passive text-based chatbots and moving toward highly autonomous, multi-step AI agents capable of executing complex workflows independently.

Effective immediately, Claude Sonnet 5 is live and serving as the default engine for all Free, Pro, Max, Team, and Enterprise accounts on Claude.ai, as well as via the Anthropic API.

Unlike prior generations optimized for human-in-the-loop chatting, Sonnet 5 is engineered natively for long-horizon autonomous agency. The model possesses advanced computer use capabilities, enabling it to independently navigate web browsers, manage computer terminals, write and execute code, and self-correct errors over hours-long tasks without human intervention.

To spark immediate enterprise adoption, Anthropic is launching the model with an aggressive, highly disruptive pricing strategy. Through August 31, 2026, API access is priced at $2.00 per million input tokens and $10.00 per million output tokens. This structure delivers frontier-level intelligence—approaching the reasoning capabilities of older flagship models like Claude Opus 4.8—at a fraction of historical operational costs.

While Sonnet 5 democratizes high-level agency, the global redeployment of Claude Fable 5 marks the return of Anthropic’s most powerful computing asset. Built on the company’s pinnacle “Mythos-class” architecture, Fable 5 is tailored for massive, days-long enterprise software engineering overhauls, deep cryptographic analysis, and systemic scientific reasoning.

Fable 5 originally debuted to immense acclaim on June 9, 2026, but was abruptly pulled offline just three days later. Citing fears over the model’s unprecedented autonomous capabilities and potential jailbreak vulnerabilities, the Trump administration issued an emergency export-control directive that froze global access.

Following weeks of intense negotiation and technical modifications, the U.S. Department of Commerce officially withdrew the restrictions. Anthropic successfully restored global access across the Claude Platform, Claude.ai, Claude Code, and Claude Cowork by integrating strict, government-vetted safety classifiers and real-time behavioral guardrails directly into the model’s infrastructure.

Rounding out the historic release is the debut of Claude Science, a specialized suite tuned specifically for academic research, heavy mathematical calculations, and complex data synthesis.

However, the raw, unrestricted twin to Fable 5—known internally as Claude Mythos 5—will remain under strict lock and key. Due to national security considerations, Mythos 5 remains heavily restricted to vetted domestic federal organizations and critical infrastructure partners. This siloed deployment will continue to operate under the watchful eye of the federal government’s closely monitored Project Glasswing framework.