GLM 5.3 FlashX Legal vs Phi 4

Price, context window & benchmark comparison

GLM 5.3 FlashX Legal

Z.ai (Zhipu)

$0.37 / $1.25

Input / Output · per 1M tokens

Phi 4

Microsoft

$0.07 / $0.14

Input / Output · per 1M tokens

Compare different models

Verdict: Phi 4 is 6.7× cheaper than GLM 5.3 FlashX Legal on a typical 3:1 input/output mix. GLM 5.3 FlashX Legal has the larger context window (1M vs 16K).

	GLM 5.3 FlashX Legal	Phi 4
Input price / 1M	$0.37	$0.07
Output price / 1M	$1.25	$0.14
Blended price (3:1)	$0.59	$0.0875
Cached input / 1M	$0.075	—
Context window	1M	16K
Max output	131K	15K
Intelligence index	—	—
Coding index	—	—
Providers	1	—
Best provider uptime (30m)	100.0%	—
Vision input	Yes	No
Reasoning	Yes	No
Tool calling	Yes	No
Released	2026-11-02	2025-01-10
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, GLM 5.3 FlashX Legal or Phi 4?

Phi 4 is 6.7× cheaper than GLM 5.3 FlashX Legal on a typical 3:1 input/output mix.

GLM 5.3 FlashX Legal vs Phi 4: which has a bigger context window?

GLM 5.3 FlashX Legal: 1,048,576 tokens. Phi 4: 16,384 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GLM 5.3 FlashX Legal ≈ $1,365, Phi 4 ≈ $210.00.

GLM 5.3 FlashX Legal vs Phi 4