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Aider polyglot — cost vs performance

Best current row per canonical model in the group “pass_rate_2” (61 models) against cheapest current input price (USD / 1M tokens). The dashed line is the Pareto frontier: no model is both better and cheaper than a point on it.

open / restricted weights closed Pareto frontier (5 models)bubble = context window

Frontier models 5

Pareto frontier
Modelpass_rate_2 on Aider polyglotRankcheapest current input price (USD / 1M tokens)ProviderTrust
gpt-5OpenAI · Closed86.7%1$0.625OpenAI APIOfficial board
o4-miniOpenAI · Closed72%10$0.55OpenAI APIOfficial board
R1 0528DeepSeek · Open weights71.4%12$0.50DeepSeek APIOfficial board
DeepSeek V3 0324DeepSeek · Open weights55.1%23$0.25OpenRouterOfficial board
gpt-oss-120bOpenAI · Open weights41.8%36$0.037OpenRouterOfficial board

Methodology. Points are the best current row per canonical model in comparability group 'pass_rate_2'. Price = cheapest current offer across providers (the provider shown). Pareto frontier maximises the score and minimises x; exact ties are all kept. memory_estimate is an estimate (see /methodology). Only the selected comparability group is plotted; points under other configurations are not mixed in. Price = cheapest current offer across providers at the time of the last crawl. Nothing is estimated except where marked.