How much does Kimi K3.1 Pro cost per million tokens?

$2.00 per million input tokens and $10.00 per million output tokens, as listed on OpenRouter on October 29, 2026.

Does Kimi K3.1 Pro support prompt caching?

Yes. OpenRouter lists cached input at $0.20 per million tokens, against $2.00 for uncached input.

Is there a cheaper model as good as Kimi K3.1 Pro?

Gemini 3.6 Flash scores 72.5 on the LLMBenchmark Index, within two points of Kimi K3.1 Pro or above it, and costs $3.75 per million output tokens.

Has the price of Kimi K3.1 Pro changed?

Not since we started recording it daily on October 24, 2026.

Kimi K3.1 Pro API pricing

As of October 29, 2026, MoonshotAI Kimi K3.1 Pro costs $2.00 per million input tokens and $10.00 per million output tokens on Moonshot AI's own API, with cached input at $0.20 per million.

Kimi K3.1 Pro benchmarks and specs · Every Moonshot AI model's price

Input, per million tokens$2.00
Output, per million tokens$10.00
Cached input, per million$0.20
Context window1.05M tokens
Max output944K tokens
Output speed32 tok/s

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 Kimi K3.1 Pro
Workload	Tokens	One request	1,000 requests	Fits the context window
Chat turn	1K input + 500 output tokens	$0.0070	$7.00	Yes
Repository review	50K input + 3K output tokens	$0.130	$130.00	Yes
Agent loop	200K input + 10K output tokens	$0.500	$500.00	Yes
Solved coding task	One SWE-bench Verified attempt, divided by the share that succeed	Not computable	Not computable

Price history

We have read Moonshot AI's own price every day since October 24, 2026. It has not changed yet; any change will be listed here with its date.

October 24, 2026 First recorded: $2.00 input, $10.00 output

Cheaper models as good as Kimi K3.1 Pro

Models within two points of Kimi K3.1 Pro or above it on the LLMBenchmark Index, with a lower output price. Cheapest first.

Kimi K3.1 Pro pricing questions

How much does Kimi K3.1 Pro cost per million tokens?: $2.00 per million input tokens and $10.00 per million output tokens, as listed on OpenRouter on October 29, 2026.
Does Kimi K3.1 Pro support prompt caching?: Yes. OpenRouter lists cached input at $0.20 per million tokens, against $2.00 for uncached input.
Is there a cheaper model as good as Kimi K3.1 Pro?: Gemini 3.6 Flash scores 72.5 on the LLMBenchmark Index, within two points of Kimi K3.1 Pro or above it, and costs $3.75 per million output tokens.
Has the price of Kimi K3.1 Pro changed?: Not since we started recording it daily on October 24, 2026.