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Claude Opus 5 API Pricing & Cost Calculator

Claude Opus 5 keeps the same pricing tier as its predecessors - the Opus 5 leap is intelligence, not price. Lean hard on the 90% cache discount to make repetitive agentic loops affordable.

Anthropic's Claude Opus 5 succeeds Opus 4.8 as the flagship Claude reasoning model, with a 1-million-token context window and refined instruction following for complex multi-step planning.

By TechCompare · Updated

Input tokens
100,000
per request
Output tokens
5,000
per request
Volume
100 / monthly
Standard API

Calculator

Cost Comparison

Based on 100,000 input tokens (50% cached), 5,000 output tokens, and 100 requests.Prices are fetched live from OpenRouter and may include temporary promotional discounts not accounted for in our article and comparison figures.

Same 100,000 in / 5,000 out (50% cached) scenario, pre-loaded. Adjust tokens, caching, or swap models.
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How this is calculated

Claude Opus 5 is priced at $5.00 per million input tokens and $25.00 per million output tokens, the same rates as Claude Opus 4.8 and Claude Opus 4.7. It supports a 90% prompt caching discount ($0.50 per million cached reads) and a 50% batch discount ($2.50 per million inputs, $12.50 per million outputs) via Anthropic's Message Batches API.

Verdict

Opus 5 ships at the same $5/M input and $25/M output as Opus 4.7 and 4.8, with the 90% cache discount landing cached input at $0.50/M and the 50% batch discount available via Anthropic's Message Batches API. The pricing match means existing Opus 4.x budget holders can upgrade without repricing their per-call costs, and the cost levers are the same: stable-prompt agentic loops collapse to the cached input rate, and overnight batch jobs halve both rows. The Opus premium is only justified on hardest-tier reasoning work, but for that work the price hasn't moved.

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Related guides

Context window explained
How a model context window caps prompt size.
View guide ➜
BPE tokenization explained
How tokenizers chunk text into the units VRAM serves.
View guide ➜

Frequently asked questions

Is Claude Opus 5 more expensive than Claude Opus 4.8?
No. Both cost $5.00 per million input tokens and $25.00 per million output tokens with identical 90% cache and 50% batch discounts. Opus 5 is the same price tier, just smarter.
How much does Claude Opus 5 cost per million output tokens?
Claude Opus 5 charges $25.00 per million output tokens, matching the Opus 4.8 and Opus 4.7 pricing. With the 50% batch discount, that drops to $12.50 per million. The 90% prompt caching discount brings cached input to $0.50 per million, the same as previous Opus generations.
What's the context window on Claude Opus 5?
1 million tokens. That's double Claude Opus 4.8's 500K context. The 1M context is meaningful for long-document analysis, multi-file code synthesis, and agentic loops where you accumulate conversation state. At cached input rate of $0.50/M, processing 1M tokens of cached context costs roughly $0.50 per call.

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