Question 1

What does this LongCat-2.0 vs Kimi K3 comparison cover?

Accepted Answer

It brings together documented inputs and outputs, token limits, deployment terms and available pricing. When both models have source-linked, verified results on a shared benchmark, those results are shown with their individual sources. The comparison is a starting point for evaluating your own workload.

Question 2

Which is cheaper: LongCat-2.0 or Kimi K3?

Accepted Answer

LongCat-2.0 lists $0.75 input and $3.00 output per 1M tokens. Kimi K3 lists $3.00 input and $15.00 output. The cheaper workload depends on the mix of input and output. Long-context tiers, caching, batch processing and retries can change the bill.

Question 3

Which has the larger context window: LongCat-2.0 or Kimi K3?

Accepted Answer

LongCat-2.0 lists 1M tokens and Kimi K3 lists 1.05M. Kimi K3 therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: LongCat-2.0 or Kimi K3?

Accepted Answer

There is no matched speed measurement for both models with the same source, host, region and date. Test the same prompts at your expected concurrency and measure time to the first useful response as well as complete task time.

Question 5

What input and output types do LongCat-2.0 and Kimi K3 support?

Accepted Answer

LongCat-2.0 records text input and text output. Kimi K3 records text, image, video input and text output. “Not documented” means the current source record is incomplete; it does not prove that a modality is unsupported.

Question 6

Should I choose LongCat-2.0 or Kimi K3?

Accepted Answer

Consider LongCat-2.0 if you need a lower listed input rate or a lower listed output rate. Consider Kimi K3 if you need larger context or larger maximum output. Kimi K3 offers downloadable weights; LongCat-2.0 is listed as a proprietary model. Compare licence terms and operating costs before choosing a deployment. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.

Specification	LongCat-2.0	Kimi K3
Provider	Meituan	Moonshot AI
Listed pricing route	Meituan	Moonshot AI
Model family	longcat	kimi-k3
Accepted inputs	text	text, image, video
Produced outputs	text	text
Context window	1M	1.05MHigher
Max output	131.07K	1.05MHigher
Input price / 1M	$0.75Lower	$3.00
Output price / 1M	$3.00Lower	$15.00
Reasoning mode	Documented	Documented
Tool calling	Documented	Documented
Image input	Not documented	Documented
Audio input	Not documented	Not documented
Structured output	Not documented	Documented
License	Proprietary	Open weights

LongCat-2.0 vs Kimi K3

LongCat-2.0

Kimi K3

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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