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Beat
The companies building frontier AI — Anthropic, OpenAI, Google, xAI — and the choices they make with it.
Anthropic says Opus 5.5 matches Fable 5.1 at $4 and $20 per million tokens, a fifth below Opus 5. OpenAI halved Sol and Luna to $2 and $10 and $0.10 and $0.50. An independent tester puts Opus 5.5 on top of its index and Sol level with its predecessor.
Sep 23, 2026
The company says its AI agents produced a proof about when fluid equations break down, a potential milestone for AI in mathematics that still needs outside scrutiny.
Sep 8, 2026
Two days after Anthropic's Claude Fable 5.1, OpenAI says its new model beats it on the scientific-agent benchmark at the same $10 and $50 list price. Its own system card says the model's reasoning got harder to monitor.
Sep 4, 2026
Astra is the first model OpenAI has designated Critical for cyber capability under its Preparedness Framework. It is releasing it behind heavier friction, and warning users the safeguards can sometimes stop legitimate work.
Sep 1, 2026
Anthropic says the new model more than doubles its predecessor on a scientific-agent benchmark and costs around 25% less to run. Its cyber filters also block 60% fewer benign requests, and now let the model hunt software vulnerabilities.
Sep 1, 2026
Private Safety Processing, previewed August 19, is OpenAI's bid to spot misuse across related interactions while keeping customer content away from its staff — squaring expanding safety monitoring with a zero-retention promise.
Aug 26, 2026
SpaceXAI shipped a new flagship four weeks after the last one, left headline pricing at $2 in, $6 out and raised the cached-input rate by two-thirds. Its own comparison table shows a model that matches rivals on a composite index, leads on some benchmarks and trails on others.
Aug 13, 2026
OpenAI paused internal work that doesn't meet new security controls and will test Astra with government agencies. Two months after Washington forced Anthropic's Fable dark, OpenAI is taking the pause on its own terms.
Aug 8, 2026
The model becomes the default for Claude Max and keeps Opus 4.8's list price, but migration changes can alter token use.
Jul 24, 2026
Claude Fable 5 puts a class of model Anthropic had kept out of general release into public hands — wrapped in a filter that reroutes sensitive requests to a weaker model, and a meter that makes heavy use cost more later this month.
Jun 9, 2026
Seven in-house models — including a coding model now in Copilot — show Microsoft building alternatives to the OpenAI technology it has leaned on.
Jun 7, 2026
A background process that synthesizes what ChatGPT knows about you is now the main memory system — and it's coming to free users.
Jun 4, 2026
