Flagship model routing

GPT-5.5 vs Claude Opus 4.8 Cost

Compare approximate GPT-5.5 and Claude Opus 4.8 API list prices for flagship text workloads.

See sample costs Custom calculator

OpenAI

GPT-5.5

Provider: OpenAI
Modality: text
Context: 272,000
Input / 1M: $5.00
Output / 1M: $30.00
Cached / 1M: $0.50
Batch discount: 50%

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Anthropic

Claude Opus 4.8

Provider: Anthropic
Modality: text
Context: 200,000
Input / 1M: $5.00
Output / 1M: $25.00
Cached / 1M: $0.50
Batch discount: 50%

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Sample workload

Estimated spend on a shared scenario

Catalog rates updated 2026-07-31. Same inputs on both models for an apples-to-apples read.

GPT-5.5

10k × 2k/500 tokens

$250.00

Claude Opus 4.8

10k × 2k/500 tokens

$225.00

Lower cost

Claude Opus 4.8 is lower by $25.00 on this sample workload.

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Approximate static list prices for planning only. Always verify against each provider’s official pricing page before production budgeting.