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#API pricing

2 articles tagged API pricing

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Articles tagged API pricing, newest first.

Claude Sonnet 5.5 vs. Claude Opus 5.5: A Coding Cost Check

Claude Sonnet 5.5 leads Claude Opus 5.5 on one of three reported coding tests. Input, output and cache-write rates half of Claude Opus 5.5's; cache reads equal. FrontierCode v1.1 max effort: 50 times the high-effort cost and a lower score. Test high effort first and record accuracy and cost per attempt.

AI Performance

Claude Opus 5.5 Brings Cheaper Coding, but Max Effort Can Lag

Claude Opus 5.5 does comparable tasks at 40% lower cost than Opus 5, Anthropic says. It tops GPT-6 Astra on Terminal-Bench 4.0 at 66.4% but trails it on AutomationBench. Per million tokens: $4 input, $20 output, 20% below Opus 5; cache reads 60% cheaper. On FrontierCode, medium effort under $1 beat max effort costing over $5. Test medium and high effort on your own tasks; compare cost per successful task.

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