Claude 4.5 Opus
AI/ML API
Claude 4.5 Opus by AI/ML API costs $6.88 per 1M input tokens and $34.39 per 1M output tokens, with a 200K-token context window.
Pricing
Input (per 1M tokens)
$6.88
Output (per 1M tokens)
$34.39
Cached input (per 1M)
$0.69
Specifications
- Provider
- AI/ML API
- Context window
- 200K tokens
- Parameters
- —
- Released
- Nov 2025
- Open weights
- No
- Frontier model
- No
Compare Claude 4.5 Opus with…
FAQ
How much does Claude 4.5 Opus cost?
Claude 4.5 Opus is priced at $6.88 per 1M input tokens and $34.39 per 1M output tokens. Output tokens cost more than input.
What is Claude 4.5 Opus's context window?
Claude 4.5 Opus supports a context window of 200K tokens — the maximum prompt plus response length it can handle in a single request.
Is Claude 4.5 Opus open weight?
No — Claude 4.5 Opus is a closed/proprietary model accessed via API.
Data as of 2026-10-15. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.