GLM 5.3 FlashX Legal vs Grok 4.20 Multi-Agent

Price, context window & benchmark comparison

GLM 5.3 FlashX Legal

Z.ai (Zhipu)

$0.37 / $1.25

Input / Output · per 1M tokens

Grok 4.20 Multi-Agent

xAI

$1.25 / $2.50

Input / Output · per 1M tokens

Compare different models

Verdict: GLM 5.3 FlashX Legal is 2.6× cheaper than Grok 4.20 Multi-Agent on a typical 3:1 input/output mix. Grok 4.20 Multi-Agent has the larger context window (2M vs 1M).

	GLM 5.3 FlashX Legal	Grok 4.20 Multi-Agent
Input price / 1M	$0.37	$1.25
Output price / 1M	$1.25	$2.50
Blended price (3:1)	$0.59	$1.56
Cached input / 1M	$0.075	$0.20
Context window	1M	2M
Max output	131K	1.8M
Intelligence index	—	—
Coding index	—	—
Providers	1	—
Best provider uptime (30m)	100.0%	—
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	No
Released	2026-11-02	2026-03-31
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, GLM 5.3 FlashX Legal or Grok 4.20 Multi-Agent?

GLM 5.3 FlashX Legal is 2.6× cheaper than Grok 4.20 Multi-Agent on a typical 3:1 input/output mix.

GLM 5.3 FlashX Legal vs Grok 4.20 Multi-Agent: which has a bigger context window?

GLM 5.3 FlashX Legal: 1,048,576 tokens. Grok 4.20 Multi-Agent: 2,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GLM 5.3 FlashX Legal ≈ $1,365, Grok 4.20 Multi-Agent ≈ $3,750.

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