anthropic
Anthropic: Claude Opus 4.8 (Fast) API Pricing
Anthropic: Claude Opus 4.8 (Fast) costs $10.00 per 1M input tokens and $50.00 per 1M output tokens (cache reads: $1.00). Context window: 1M. Prices verified 2026-08-23 · source
Input / 1M tokens
$10.00
Output / 1M tokens
$50.00
Context window
1M
Max output
128K
What would Anthropic: Claude Opus 4.8 (Fast) cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $280.00 |
| Coding agent | 5,000 | 8,000 / 2,000 | $900.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $1950.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $500.00 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About Anthropic: Claude Opus 4.8 (Fast)
Fast-mode variant of [Opus 4.8](/anthropic/claude-opus-4.8) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 4.8. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode