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Anthropic Launches Opus 5 With Lower Costs And Fewer Restrictions

Anthropic has launched Opus 5, the latest version of its flagship AI model, continuing the rapid expansion of its 5-series lineup just two months after the release of Opus 4.8.

The company said Opus 5 is designed to deliver stronger performance at a lower cost than Fable 5 while introducing fewer restrictions for enterprise users.

A Premium Model With A More Practical Proposition

Although Opus 5 is smaller than Fable 5, Anthropic said it is cheaper to run and less restrictive. The company also said the model outperformed Fable 5 on several internal benchmarks, suggesting improved efficiency without sacrificing performance.

Opus 5 follows the recent launches of Mythos 5, Fable 5 and Sonnet 5, leaving Haiku as the only model in Anthropic’s portfolio yet to receive a 5-series upgrade.

Anthropic Emphasizes Reliability And Iteration

According to Anthropic, Opus 5 is “much stronger at verifying its work and iterating carefully until it succeeds.” As an example, the company said the model independently built a computer vision pipeline from an incomplete prompt during internal testing.

The release reflects Anthropic’s continued focus on improving reasoning capabilities and reducing the amount of human intervention required for complex tasks.

Fewer Restrictions, But Cybersecurity Guardrails Remain

Unlike Fable 5 and Mythos, Opus 5 is not subject to Anthropic’s 30-day data retention policy. The company said the model is intended for customers seeking greater flexibility while maintaining existing security protections.

Restrictions remain for cybersecurity-related tasks. Anthropic said Opus 5 cannot be used to scan software binaries for vulnerabilities, although it can analyse source code for security flaws, which the company classifies as defensive security work.

Anthropic also said its safety classifiers are expected to activate 85% less frequently for Opus 5 than for Fable 5.

A Smaller Friction Point For Developers

The company is also rolling out a beta feature called Automatic Fallbacks. If a prompt triggers a safety classifier, participating API users will automatically be routed to a less capable model instead of receiving an error.

Anthropic said the feature is intended to reduce workflow interruptions for developers while maintaining existing safety measures.

Shein Targets $25 Billion Valuation In Hong Kong IPO As Growth Slows

Shein is reportedly targeting a valuation of around $25 billion in its planned Hong Kong IPO, a sharp decline from the nearly $100 billion valuation the online fashion retailer achieved in a 2022 fundraising round.

Two people familiar with the plans said the company was likely to target about $25 billion, while another source put the expected range at $25 billion to $28 billion based on the proposed price band.

IPO Valuation Falls Sharply

Shein plans to sell up to 8% of its shares in the offering, according to a person familiar with the plans. At a $25 billion valuation, that would translate into an IPO of as much as $2 billion.

The latest target is also below the $30 billion to $40 billion valuation the company was seeking earlier this month as it began meeting with potential investors.

Founded in China in 2012 and now headquartered in Singapore, Shein sells low-cost clothing to consumers in about 160 countries. The company is expected to launch its long-awaited Hong Kong IPO later this week.

Trade Restrictions Weigh On Growth

Shein’s valuation has come under pressure as major markets tighten rules affecting low-cost e-commerce shipments. The European Union, for example, has moved to impose additional fees on cheap parcels from platforms such as Shein and Temu. EU Tightens Rules On Low-Cost E-Commerce Parcels

In the U.S., the removal of an import duty exemption for small packages has also affected the company. Shein reported a $99 million quarterly loss in the first quarter of 2026 as sales growth slowed, while a one-time accounting charge further weighed on its results. Shein Reports First-Quarter Loss Ahead Of IPO

Investors Question Shein’s Growth Prospects

The steep reduction in valuation reflects growing concerns over slower growth, higher trade costs, regulatory pressure and stronger competition across global e-commerce.

Some investors who reviewed Shein’s recent financial statements or attended IPO presentations told Reuters they were skeptical that the company could return to the growth rates that supported its $98.2 billion valuation in 2022. Shein’s Slowing Growth Tests Investor Appetite

A lower IPO valuation could also affect Shein’s existing investors. Under the terms of its IPO filing, the company may have to issue additional shares to certain pre-IPO investors if its valuation falls below agreed thresholds.

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