Cost per game against Elo

Mean API-equivalent cost of one player's side of a completed game, at list prices, on a log scale. Bars are 95% intervals.

OpenAIAnthropicOpen weightsCost–Elo frontier
10001200140016001800$0.05$0.1$0.2$0.5$1$2$5Cost per game (USD, log scale)Astra HighAstra MediumTerra HighOpus 5.5 HighOpus 5.5 MediumKimi K3.1 ProDeepSeek V4.1 FlashSonnet 5.5 HighGLM 5.3 (low)Qwen 3.8 27B

Costs use recorded token counts, including cache reads and writes, priced at standard list prices; subscription plans would charge differently. Retries are excluded from the means.