Claude Opus 4.8 API Cost Calculator

Anthropic's Claude Opus 4.8: $5/M input · $25/M output · $0.5/M cached input. Price your own workload below.

Presets:

What Claude Opus 4.8 costs in practice

WorkloadInputOutputCost
Short chat message500250$0.0088
10-page document + summary7,000500$0.048
Agent / coding session50,00010,000$0.500
1M tokens in + 1M out1,000,0001,000,000$30.00

Claude Opus 4.8 vs nearest rivals

Closest-priced alternatives on a mixed 10K-input / 2K-output request:

ModelInput $/MTokOutput $/MTokMixed request
Claude Opus 4.8$5$25$0.100
GPT-4o$2.5$10$0.045
GPT-5.4$2.5$15$0.055
GPT-5.6 Sol$5$30$0.110

Frequently asked questions

How much does the Claude Opus 4.8 API cost?

Claude Opus 4.8 costs $5 per million input tokens and $25 per million output tokens, with cached input at $0.5 per million (90% off).

How much does a typical chat message cost with Claude Opus 4.8?

A short chat message (about 500 input and 250 output tokens) costs roughly $0.0088 with Claude Opus 4.8. At 1,000 such requests a day, that is about $262.50 per month.

Is Claude Opus 4.8 cheap compared to similar models?

Claude Opus 4.8 has the #23 cheapest input rate of the 26 models we track. On a mixed workload (10K input / 2K output), it costs $0.100 per request, versus $0.045 for GPT-4o and $0.110 for GPT-5.6 Sol.

Related

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Last updated 2026-08-03. Prices verified againstAnthropic's official pricing page; see themethodology.