claude-opus-4-5 · Anthropic
The late-2025 Opus on a 200K window — superseded by Opus 5 at identical pricing with 5× the context.
Last checked Aug 16, 2026. Calculations use the listed base rates; provider-specific tiers, cache writes, batch pricing, and long-context rules may differ. Confirm the current rate at the official provider source.
Input
$5.00
per 1M tokens
Output
$25.00
per 1M tokens
Cached input
$0.50
per 1M tokens
Context window
200K
max output 64K
Claude Opus 4.5 cost calculator
What Claude Opus 4.5 costs per task
| Use case | Input tokens | Output tokens | Cost / request | Monthly @ 1K req/day |
|---|---|---|---|---|
| Customer support chatbot | 3,500 | 350 | $0.0152 | $456.75 |
| RAG / search-augmented answers | 8,000 | 500 | $0.0345 | $1,035.00 |
| AI coding assistant | 12,000 | 2,000 | $0.0776 | $2,328.00 |
| Document summarization | 25,000 | 600 | $0.1287 | $3,862.50 |
| Agentic workflow | 40,000 | 1,500 | $0.1205 | $3,615.00 |
| Content generation | 800 | 1,200 | $0.0329 | $987.60 |
| Data extraction & tagging | 2,000 | 250 | $0.0145 | $433.50 |
| Translation | 5,000 | 5,500 | $0.1591 | $4,773.75 |
Assumes each use case's typical cacheable share of input. See full cost scenarios.
Compare with alternatives
| Model | Input /M | Output /M | Context | Chat request* |
|---|---|---|---|---|
| Claude Opus 4.5 | $5.00 | $25.00 | 200K | $0.031 |
| Claude Opus 5compare | $5.00 | $25.00 | 1M | $0.031 |
| Claude Sonnet 5 | $2.00 | $10.00 | 1M | $0.0124 |
| GPT-5.2 | $1.75 | $14.00 | 400K | $0.0151 |
*4,000 in + 800 out tokens, 50% cached input where available.
Related calculations
FAQ
Claude Opus 4.5 costs $5.00 per 1M input tokens and $25.00 per 1M output tokens, with cached input at $0.50 per 1M tokens. Verified Aug 16, 2026 against https://platform.claude.com/docs/en/docs/about-claude/pricing.
Claude Opus 4.5 supports a 200,000-token context window with up to 64,000 output tokens per request, tokenized with Claude BPE (~100K vocab).
At $5.00/M input and $25.00/M output, Claude Opus 4.5 sits below Claude Opus 5 ($5.00/M in, $25.00/M out) — see the comparison table for full-workload differences.