Verified 2026-02-11 · sourced from Anthropic
Claude Opus 4.5 (Legacy) Token Calculator, Pricing & 100K/1M Cost
Check Anthropic Claude Opus 4.5 (Legacy) pricing, estimate 100K and 1M token cost, and size a real API budget before you send a single request. Standard pricing is $5.00 per million input tokens and $25.00 per million output tokens with a 200K token context window.
Quick answer: Claude Opus 4.5 (Legacy) pricing per 1M tokens is $5.00 input and $25.00 output. Context window: 200,000 tokens · Cached input: $0.500 / 1M.
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Context window
200,000 tokens
Input price
$5.00 / 1M
Output price
$25.00 / 1M
Cached input
$0.500 / 1M
Usage scenarios
Compare standard and cached pricing (where available) across common workloads.
| Scenario | Tokens in | Tokens out | Total tokens | Standard cost | Cached cost |
|---|---|---|---|---|---|
Quick chat reply Single user question with a short assistant answer | 650 | 220 | 870 | $0.0088 | $0.0058 |
Coding assistant session Multi-turn pair programming exchange (≈6 turns) | 2,600 | 1,400 | 4,000 | $0.0480 | $0.0363 |
Knowledge base response Retrieval-augmented answer referencing multiple passages | 12,000 | 3,000 | 15,000 | $0.135 | $0.0810 |
Near-max context run Large document processing approaching the 200K token limit | 176,000 | 24,000 | 200,000 | $1.48 | $0.688 |
Daily & monthly budgeting
Translate usage into predictable operating expenses across popular deployment sizes.
| Profile | Requests/day | Tokens/day | Daily cost | Monthly cost | Cached daily | Cached monthly |
|---|---|---|---|---|---|---|
| Team pilot | 25 | 75,000 | $0.875 | $26.25 | $0.650 | $19.50 |
| Product launch | 100 | 500,000 | $5.50 | $165.00 | $3.92 | $117.75 |
| Enterprise scale | 500 | 3,000,000 | $35.00 | $1050.00 | $26.00 | $780.00 |
Pricing notes
- Previous generation Opus model before Opus 4.6.
- Pricing retained at input $5/MTok and output $25/MTok.
- Prompt caching read price: $0.50/MTok.
Frequently asked questions
How much does Claude Opus 4.5 (Legacy) cost per 1,000 tokens?
At the published rates of $5.00 per million input tokens and $25.00 per million output tokens, a typical 1,000 token request (≈70% input, 30% output) costs about $0.0110.
Does Claude Opus 4.5 (Legacy) offer cached input discounts?
Claude Opus 4.5 (Legacy) drops input costs to $0.500 per million cached tokens. Using cached contexts, that same 1,000 token call totals $0.0078, a significant saving for chatbots and RAG systems.
What is the context window for Claude Opus 4.5 (Legacy)?
Claude Opus 4.5 (Legacy) supports up to 200,000 tokens (200K), allowing large prompts and retrieval-augmented payloads in a single call.
How fresh is the Claude Opus 4.5 (Legacy) pricing data?
Pricing is sourced from https://docs.claude.com/en/docs/about-claude/pricing and was last verified on 2026-02-11. The calculator updates automatically when models.json is refreshed.