GLM 5.3 vs Kimi K3

Compare GLM 5.3 from Z.ai and Kimi K3 from moonshotai on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

GLM 5.3 vs Kimi K3: side-by-side summary

GLM 5.3 and Kimi K3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GLM 5.3, from Z.ai, has a 1,048,576-token context window and is priced at $0.079/M tokens input, $1.40/M tokens output on OpenRouter.

Kimi K3, from moonshotai, has a 1,048,576-token context window and is priced at $0.238/M tokens input, $16/M tokens output on OpenRouter.

Context window

GLM 5.3: 1,048,576 tokens
Kimi K3: 1,048,576 tokens

Price

GLM 5.3: $0.079/M tokens input, $1.40/M tokens output
Kimi K3: $0.238/M tokens input, $16/M tokens output

Provided by

GLM 5.3: Z.ai
Kimi K3: moonshotai

GLM 5.3 vs Kimi K3 at a glance

GLM 5.3 vs Kimi K3 comparison
Attribute	GLM 5.3	Kimi K3
Input price	$0.079/M tokens	$0.238/M tokens
Output price	$1.40/M tokens	$16/M tokens
Context window	1,048,576 tokens	1,048,576 tokens
Intelligence Index	44.8	43.6
Coding Index	74.8	76.2
Agentic Index	53.1	50.0
Latency (p50)	0.45 s	0.79 s
Throughput (p50)	113.0 tok/s	86.0 tok/s

Benchmark data updated Oct 8, 2026

Frequently asked questions

Is GLM 5.3 cheaper than Kimi K3?

GLM 5.3 is cheaper than Kimi K3 on OpenRouter: GLM 5.3 costs $0.079/M tokens input and $1.40/M tokens output, while Kimi K3 costs $0.238/M tokens input and $16/M tokens output.

Which has the longer context window, GLM 5.3 or Kimi K3?

GLM 5.3 and Kimi K3 have the same context window of 1,048,576 tokens.

Which is faster, GLM 5.3 or Kimi K3?

GLM 5.3 is faster on OpenRouter, generating a median 113.0 tokens per second compared with 86.0 tokens per second for Kimi K3.

Which scores higher on coding, GLM 5.3 or Kimi K3?

Kimi K3 scores higher on coding, with an Artificial Analysis Coding Index of 76.2 compared with 74.8 for GLM 5.3.

GLM 5.3 vs Kimi K3

GLM 5.3 vs Kimi K3

Overview

GLM 5.3 vs Kimi K3: side-by-side summary

Overview

GLM 5.3 vs Kimi K3: side-by-side summary

GLM 5.3 vs Kimi K3 at a glance

Frequently asked questions

Is GLM 5.3 cheaper than Kimi K3?

Which has the longer context window, GLM 5.3 or Kimi K3?

Which is faster, GLM 5.3 or Kimi K3?

Which scores higher on coding, GLM 5.3 or Kimi K3?

GLM 5.3 vs Kimi K3 at a glance

Frequently asked questions

Is GLM 5.3 cheaper than Kimi K3?

Which has the longer context window, GLM 5.3 or Kimi K3?

Which is faster, GLM 5.3 or Kimi K3?

Which scores higher on coding, GLM 5.3 or Kimi K3?