Opus 4.8 Lands, Anthropic’s Valuation Nears $1 Trillion, and OpenAI Eyes the Public Markets
Friday’s AI headlines are dominated by Anthropic — with a major model upgrade, a record-setting funding round, and a tease of even more powerful models on the horizon — while OpenAI quietly prepares its own historic milestone.
Anthropic Releases Claude Opus 4.8 With New Dynamic Workflows
Anthropic shipped Claude Opus 4.8 on May 28, describing it as its sharpest and most autonomous flagship yet. The model outperforms its predecessor on agentic coding, financial analysis, and complex reasoning benchmarks, and arrives at the same price ($5/$25 per million input/output tokens). A new fast mode delivers 2.5× speed at three times the cost efficiency of the previous generation. Claude Code gains a dynamic workflows feature enabling it to tackle large-scale engineering problems end-to-end. Anthropic also confirmed that Mythos-class models are expected to reach developers “in the coming weeks.”
Anthropic Closing $30 Billion Round at Near-$1 Trillion Valuation
Anthropic is reportedly finalizing a $30 billion funding round co-led by Sequoia, Dragoneer, Greenoaks, and Altimeter at a valuation above $900 billion — which would place it ahead of OpenAI’s $852 billion valuation from March. The company’s annualized revenue hit approximately $30 billion in April 2026, edging past OpenAI for the first time. Google’s separate $40 billion investment in Anthropic earlier this year further cements the company’s position at the frontier.
OpenAI Quietly Prepares a Confidential IPO Filing
OpenAI is preparing to file a confidential S-1 with the SEC as early as this month, with the most likely public listing window now targeted for Q4 2026 or early 2027. The move would be one of the most closely watched tech IPOs in years, coming as the company holds deployments at 92% of the Fortune 500 and Microsoft Copilot surpasses 15 million paid seats.
UK Regulator Closes Consultation on AI in Hiring
The UK Information Commissioner’s Office (ICO) closed its public consultation on automated decision-making in recruitment today, May 29. Preliminary findings indicate that employers relying on AI to screen or rank candidates must ensure more meaningful human involvement in the process — a requirement that could reshape how HR platforms in the UK are designed and audited. Formal guidance is expected later this year.
What to watch: All eyes are on Anthropic’s Mythos public release timeline — if it arrives in June as hinted, it could reset the benchmark bar across the industry just as OpenAI’s IPO preparations ramp up competitive pressure.