Z.ai: GLM 5.3

Name: Z.ai: GLM 5.3
Author: OpenRouter

deprecated

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks.

Context

1.0M

Max output

944K

Input price

$0.08/1M tokens

Output price

$1.4/1M tokens

Capabilities

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

Model IDz-ai/glm-5.3

ProviderOpenRouter

Creatorz-ai

Familyglm-5.3

License—

Parameters—

Statusdeprecated

Input modalitiestext

Output modalitiestext

Architecture—

Knowledge cutoff—

Training data cutoff—

Release date2026-08-18

Deprecation date2098-12-31

Typechat

Reasoning tokens—

Max input—

Open weight—

Sourceofficial

Last updated2026-10-19

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

$0.08

Output

$1.4

↓71%$4.8

Cache write

—

Cache read

$0.08

Batch in

—

Batch out

—

Price history · $/1M input

$1.4

$0.079

Sep 7Oct 19

Date	Input	Output	Cache read	Change
Aug 31, 2026	$1.4	$4.4	$0.26	—
Sep 4, 20260d4ae28	$1.4	$4.4	$0.14	↑0.0%
Sep 7, 2026a5ce2fd	$1.4	$4.4	$0.26	↑0.0%
Sep 13, 2026f844c98	$1.092	$3.432	$0.203	↓22%
Sep 14, 202620b7699	$1.4	$4.4	$0.26	↑28%
Sep 19, 20263170597	$0.91	$2.86	$0.169	↓35%
Sep 20, 20267bc8de4	$0.896	$2.816	$0.166	↓2%
Sep 21, 2026af38e5c	$0.91	$2.86	$0.169	↑2%
Sep 22, 2026f13f134	$0.84	$2.64	$0.156	↓8%
Sep 25, 202699b2555	$1.4	$4.4	$0.26	↑67%
Sep 27, 20266ba56d7	$0.274	$0.86	$0.045	↓80%
Sep 28, 2026f41f4c4	$0.325	$4.4	$0.26	↑19%
Sep 29, 20261a66bb0	$1.4	$4.4	$0.26	↑331%
Oct 1, 20268c801e2	$0.3	$4.4	$0.24	↓79%
Oct 2, 20262b89bf1	$1.4	$4.4	$0.14	↑367%
Oct 6, 202600710a0	$0.07	$7	$0.065	↓95%
Oct 8, 2026da0e420	$0.049	$3.39	$0.048	↓30%
Oct 9, 202670614e7	$0.039	$7	$0.038	↓20%
Oct 10, 2026c3d6504	$0.039	$4.8	$0.038	↑0.0%
Oct 11, 2026dcc4383	$0.07	$4.8	$0.05	↑79%
Oct 12, 2026ceebcb8	$0.079	$4.8	$0.059	↑13%
Oct 15, 2026b92059e	$0.079	$4.8	$0.078	↑0.0%
Oct 19, 202649ce653	$0.079	$1.4	$0.078	↑0.0%

Input is ↓94% since Aug 31, 2026, from $1.4 to $0.079 per 1M tokens.

Family Comparison: glm-5.3

Model	Caps	Perf	Speed	Context	Max out	Pricing
Z.ai: GLM 5.3 Flash	RVTS	—	—	1.0M	944K	$0.01$0.17
Z.ai: GLM 5.3 Flash (batch)	RVTS	—	—	1.0M	131K	$0.05$0.18
Z.ai: GLM 5.3	RVTS	—	—	1.0M	944K	$0.08$1.4
Z.ai: GLM 5.3 FlashX	RVTS	—	—	1.0M	131K	$0.37$1.25
Z.ai: GLM 5.3 (batch)	RVTS	—	—	1.0M	131K	$0.45$2
Z.ai: GLM 5.3 Prime	RVTS	—	—	1M	131K	$2.8$8.8

API

GET/v1/models/openrouter/z-ai/glm-5.3

Z.ai: GLM 5.3

deprecated

z-ai/glm-5.3

GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks.

Changes · 24 entries

z-ai/glm-5.3update49ce653Oct 19, 2026, 06:45 AM

pricingoutput$4.8→$1.4

z-ai/glm-5.3updateb92059eOct 15, 2026, 06:37 AM

pricingcached input$0.059→$0.078

z-ai/glm-5.3updateceebcb8Oct 12, 2026, 06:56 AM

pricinginput$0.07→$0.079cached input$0.05→$0.059

z-ai/glm-5.3updatedcc4383Oct 11, 2026, 06:38 AM

pricinginput$0.039→$0.07cached input$0.038→$0.05

z-ai/glm-5.3updatec3d6504Oct 10, 2026, 06:38 AM

pricingoutput$7→$4.8

z-ai/glm-5.3update70614e7Oct 9, 2026, 06:39 AM

pricinginput$0.049→$0.039output$3.39→$7cached input$0.048→$0.038

z-ai/glm-5.3updateda0e420Oct 8, 2026, 06:41 AM

pricinginput$0.07→$0.049output$7→$3.39cached input$0.065→$0.048

z-ai/glm-5.3update00710a0Oct 6, 2026, 06:38 AM

max_output_tokens131072→943718

pricinginput$1.4→$0.07output$4.4→$7cached input$0.14→$0.065

z-ai/glm-5.3update2b89bf1Oct 2, 2026, 06:39 AM

max_output_tokens943718→131072

pricinginput$0.3→$1.4cached input$0.24→$0.14

z-ai/glm-5.3update8c801e2Oct 1, 2026, 06:40 AM

max_output_tokens943717→943718

pricinginput$1.4→$0.3cached input$0.26→$0.24

z-ai/glm-5.3update6e8bf55Sep 30, 2026, 06:40 AM

context_window1310720→1048576

z-ai/glm-5.3update1a66bb0Sep 29, 2026, 06:40 AM

max_output_tokens943718→943717

pricinginput$0.325→$1.4

z-ai/glm-5.3updatef41f4c4Sep 28, 2026, 06:53 AM

pricinginput$0.274→$0.325output$0.86→$4.4cached input$0.045→$0.26

z-ai/glm-5.3update6ba56d7Sep 27, 2026, 06:43 AM

max_output_tokens943717→943718

pricinginput$1.4→$0.274output$4.4→$0.86cached input$0.26→$0.045

z-ai/glm-5.3update99b2555Sep 25, 2026, 06:38 AM

max_output_tokens131072→943717

pricinginput$0.84→$1.4output$2.64→$4.4cached input$0.156→$0.26

z-ai/glm-5.3updatef13f134Sep 22, 2026, 06:39 AM

pricinginput$0.91→$0.84output$2.86→$2.64cached input$0.169→$0.156

z-ai/glm-5.3updateaf38e5cSep 21, 2026, 06:49 AM

pricinginput$0.896→$0.91output$2.816→$2.86cached input$0.166→$0.169

z-ai/glm-5.3update7bc8de4Sep 20, 2026, 06:33 AM

pricinginput$0.91→$0.896output$2.86→$2.816cached input$0.169→$0.166

z-ai/glm-5.3update3170597Sep 19, 2026, 06:34 AM

max_output_tokens943717→131072

pricinginput$1.4→$0.91output$4.4→$2.86cached input$0.26→$0.169

z-ai/glm-5.3update20b7699Sep 14, 2026, 06:48 AM

max_output_tokens131072→943717

pricinginput$1.092→$1.4output$3.432→$4.4cached input$0.203→$0.26

z-ai/glm-5.3updatef844c98Sep 13, 2026, 06:38 AM

max_output_tokens943718→131072

pricinginput$1.4→$1.092output$4.4→$3.432cached input$0.26→$0.203

z-ai/glm-5.3updatea5ce2fdSep 7, 2026, 06:48 AM

max_output_tokens262144→943718

pricingcached input$0.14→$0.26

z-ai/glm-5.3update0d4ae28Sep 4, 2026, 06:37 AM

max_output_tokens131072→262144

pricingcached input$0.26→$0.14

z-ai/glm-5.3createe3d7dedAug 31, 2026, 04:13 AM