How much does Claude Opus 5 cost per million tokens?

$5.00 per million input tokens and $25.00 per million output tokens, as listed on OpenRouter on October 21, 2026.

Does Claude Opus 5 support prompt caching?

Yes. OpenRouter lists cached input at $0.50 per million tokens, against $5.00 for uncached input.

Is there a cheaper model as good as Claude Opus 5?

Gemini 4 Argon scores 84.0 on the LLMBenchmark Index, within two points of Claude Opus 5 or above it, and costs $10.00 per million output tokens.

Has the price of Claude Opus 5 changed?

Not since we started recording it daily on October 21, 2026.

Claude Opus 5 API pricing

As of October 21, 2026, Anthropic Claude Opus 5 costs $5.00 per million input tokens and $25.00 per million output tokens on Anthropic's own API, with cached input at $0.50 per million.

Claude Opus 5 benchmarks and specs · Every Anthropic model's price

Input, per million tokens$5.00
Output, per million tokens$25.00
Cached input, per million$0.50
Context window1M tokens
Max output128K tokens
Output speedNot measured

What a request costs

Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.

Cost of three workloads on Claude Opus 5
Workload	Tokens	One request	1,000 requests	Fits the context window
Chat turn	1K input + 500 output tokens	$0.018	$17.50	Yes
Repository review	50K input + 3K output tokens	$0.325	$325.00	Yes
Agent loop	200K input + 10K output tokens	$1.25	$1250.00	Yes
Solved coding task	One SWE-bench Verified attempt, divided by the share that succeed	$1.33	$1330.00

Price history

We have read Anthropic's own price every day since October 21, 2026. It has not changed yet; any change will be listed here with its date.

October 21, 2026 First recorded: $5.00 input, $25.00 output

Cheaper models as good as Claude Opus 5

Models within two points of Claude Opus 5 or above it on the LLMBenchmark Index, with a lower output price. Cheapest first.

Claude Opus 5 pricing questions

How much does Claude Opus 5 cost per million tokens?: $5.00 per million input tokens and $25.00 per million output tokens, as listed on OpenRouter on October 21, 2026.
Does Claude Opus 5 support prompt caching?: Yes. OpenRouter lists cached input at $0.50 per million tokens, against $5.00 for uncached input.
Is there a cheaper model as good as Claude Opus 5?: Gemini 4 Argon scores 84.0 on the LLMBenchmark Index, within two points of Claude Opus 5 or above it, and costs $10.00 per million output tokens.
Has the price of Claude Opus 5 changed?: Not since we started recording it daily on October 21, 2026.