Developer says Jev decision model beat Pokémon Red in under a week

TypeSafe AI's Jev decision model beat the Elite Four and Champion in Pokémon Red on September 23, 2026, according to developer Andrew Boyd. Unlike chatbots, Jev picks from a list of options by probability, while Anthropic's Claude Opus 5 adjusted those options as it played.

• Jev beat the Elite Four and Champion in Pokémon Red on September 23, 2026
• Jev is a decision model, not an LLM: it picks the best option by probability
• Claude Opus 5 adjusted options and cut text sent to Jev by about two-thirds
• A second Jev run cost roughly $1–1.70 per 24 hours of play