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Claude Opus 5 API Pricing & Cost Calculator

By TechCompare · Updated · How we check

Claude Opus 5 keeps the same pricing as Opus 4.8, so the upgrade doesn't change the bill. Use the 90% cache discount on repetitive agentic loops.

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Cost Comparison

Based on 100,000 input tokens (50% cached), 5,000 output tokens, and 100 requests.Prices come live from OpenRouter at each maker's own price where it's listed. Temporary deals are left out.

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Same 100,000 in / 5,000 out (50% cached) scenario, pre-loaded. Adjust tokens, caching, or swap models.
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Anthropic's Claude Opus 5 succeeds Opus 4.8 as Anthropic's Opus reasoning model, with a 1-million-token context window and refined instruction following for complex multi-step planning.

Anthropic: Claude Opus 5

Anthropic's own price

Input
$5
Output
$25
Cached
$0.50

per 1M tokens

Batch available

Price checked 2026-11-12

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. Cached reads cost $0.50 per million, 90% under fresh input. Anthropic's Message Batches API charges $2.50 per million inputs and $12.50 per million outputs.

Verdict

Reserve Opus 5 for the hardest reasoning work, where the price hasn't moved from Opus 4.8. Opus 5 ships at the same $5/M input and $25/M output as Opus 4.8, with the 90% cache discount landing cached input at $0.50/M. The pricing match means existing Opus 4.8 budget holders can upgrade without repricing their per-call costs. Stable-prompt agentic loops drop to the cached input rate, and overnight jobs through Anthropic's Message Batches API cut both rows by 50%.

More API Standalones scenarios

Claude Opus 5 vs GPT-5.6 Sol
Same-tier reasoning from Anthropic and OpenAI. Compare their list rates, cache reads, and long prompt rules.
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Claude Opus 5 vs Claude Sonnet 5
The two top Claude tiers from the same lineage. Compare rates, caching, and the work each one suits.
View details
Kimi K3 vs Claude Opus 5
A frontier-tier reasoner from Moonshot AI against Anthropic's Opus 5. Compare the cost of a finished task.
View details

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

Does Claude Opus 5 cost the same as Claude Opus 4.8?
Yes. Both cost $5.00 per million input tokens and $25.00 per million output tokens, with cached input at $0.50 per million on both. 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 Opus 4.8's output price. Batch output is $12.50 per million. The 90% prompt caching discount brings cached input to $0.50 per million, the same as Opus 4.8.
What's the context window on Claude Opus 5?
1 million tokens, the same as Claude Opus 4.8's 1M 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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