❯ Anthropic Risk Report Reveals Stronger Internal Model 2, Says No Plans for External Release

DISCLOSUREAnthropic’s latest Risk Report discloses an internal model codenamed Model 2 that shows “marked improvements” over flagship Mythos 5 on most internal tasks, though the company states it “currently has no plans for external release.” The same report also raises the risk rating for model inaccuracy in high-stakes scenarios from “very low” to “low,” citing recent cybersecurity incidents.

INTERNAL USEPer the report, Mythos 5 and Model 2 are already “heavily” used internally for coding, agent tasks, and data generation, though this performance jump is smaller than the Opus 4.6-to-Mythos leap earlier this year. Axios followed up and confirmed the report’s contents. The company also says it has observed the models’ automated R&D capabilities accelerating — it can speed up technical progress, and would do the same in the wrong hands.

ASYMMETRYWhen the strongest model stays in-house, the capability coordinates the outside world navigates by begin to distort: competitors calibrate catch-up targets against the released version, customers base procurement decisions on the released version, while the true frontier sits one step further ahead inside the lab. The leaderboards drawn up by benchmarking organizations are really measuring “the portion each company is willing to release” — from now on, frontier-gap estimates come with a discount.

▪ SIGNALFrontier labs’ capability disclosure is becoming selective disclosure — leaderboards can’t measure the true frontier.