cost per task

Sep
29
Claude Sonnet 5.5 headline beside a chart showing Anthropic’s up to 30% lower task cost and Artificial Analysis’s about 50% higher result at max effort, from separate evaluations.

Claude Sonnet 5.5 is faster, but task cost depends on effort

Anthropic claims up to 30% lower cost per task. Artificial Analysis measured $7.60 per task at max effort, about 50% above Sonnet 5. Two request settings that worked with Sonnet 5 now return 400 errors.
3 min read
Sep
23
Banner comparing Opus 5.5 and GPT-6 Sol scores and task costs, with callouts for Luna’s $0.07 per Intelligence Index task and Grok 4.7’s more than doubled output tokens.

Opus 5.5, GPT-6 Sol, GPT-6 Luna and Grok 4.7 compared on cost

Opus 5.5's lower rates left max-effort task cost roughly level with Opus 5 in one independent test. Sol and Luna roughly halved their cost per task, while Grok 4.7 used more than twice the output tokens at unchanged rates.
4 min read