LLM Toolkit Model profile · Anthropic
Claude Opus 5 pricing
Claude Opus 5 costs $5.00 per 1M input tokens and $25.00 per 1M output tokens, with a 1M context window. Rates verified against the official Anthropic pricing page as of 2026-09-02.
Input
$5.00 /1M in
cached: $0.50
Output
$25.00 /1M out
5.0× the input rate
Context window
1M tokens
≈ 750,000 words
Claude Opus 5 at a glance
| Input / 1M tokens | $5.00 |
| Cached input / 1M | $0.50 |
| Output / 1M tokens | $25.00 |
| Context window | 1M tokens |
| ≈ English words of context | 750,000 |
| Provider | Anthropic |
| Price verified | 2026-09-02 |
Source: Anthropic official pricing page. We re-verify every model monthly.
What Claude Opus 5 costs per month
| Workload | Claude Opus 5 monthly cost | Per request |
|---|---|---|
| Side-project chatbot 30K req · 2,000 in · 500 out · 40% cached | $567.00/mo | $0.019 |
| Coding agent 500K req · 12,000 in · 1,500 out · 70% cached | $29,850/mo | $0.060 |
| Bulk extraction 2,000K req · 800 in · 120 out · 20% cached | $12,560/mo | $0.0063 |
Computed from list prices verified 2026-09-02. Cache savings blend normal and cached input rates by the hit rate. Compare against every other model at your exact volumes on the API Cost Calculator.
How much context is 1M tokens?
About 750,000 English words — roughly 1,500 pages of text — or several large codebases. Filling the entire window once costs $5.00 in input tokens at list price, before the model generates a single output token. Count your real documents with the AI Token Counter.
Frequently asked questions
How much does Claude Opus 5 cost per million tokens?
Claude Opus 5 costs $5.00 per 1M input tokens and $25.00 per 1M output tokens, with cached input at $0.50. Rates are verified against Anthropic's official pricing page as of 2026-09-02.
How big is Claude Opus 5's context window?
Claude Opus 5 ships a 1M token context window — roughly 750,000 English words, or about 1,500 pages of text. Filling the entire window once costs $5.00 in input tokens at list price.
Is Claude Opus 5 cheap or expensive compared to other models?
Among the 22 models we track, Claude Opus 5 ranks #21 on input price — cheapest is GPT-5 nano at $0.05, priciest is Claude Fable 5 at $10.00. At $5.00 per 1M input, Claude Opus 5 runs 100.0× the cheapest tier. Compare it head-to-head with its rivals on the model comparison pages.
What is cached input pricing on Claude Opus 5?
Claude Opus 5 charges $0.50 per 1M cached input tokens — 10% of its $5.00 base input rate. If your requests repeat context (system prompts, documents, conversation history), prompt caching cuts the input portion of your bill accordingly. Model the exact savings on the API Cost Calculator.
Compare Claude Opus 5 against
More Anthropic models
- Claude Fable 5 $10.00 in · 1M
- Claude Sonnet 5 $2.00 in · 1M
- Claude Haiku 4.5 $1.00 in · 200K
Or see all rates on the Pricing Comparison.