GLM-5.3-Flash

API ID glm-5.3-flash

GLM-5.3-Flash is a Z.ai model, released August 2026. Standard price: $0.15 input and $0.50 output per 1M tokens.

Status: Active
Released: August 2026
Shutdown: none announced
Replacement: —

Z.ai doesn't publish shutdown dates. AIWire checks its model list daily and will flag glm-5.3-flash if it disappears.

Benchmarks

Scores as each source published them

Comparing with GLM-4.7-Flash, the previous model in this line. A score is compared only with the same benchmark from the same source, at the same setting where both have it. Full comparison: prices, limits, features

Arena

Arena	GLM-5.3-Flash	GLM-4.7-Flash	Change	Rank	Date	Source
Text By category Math 1505 rank 10 vs 1362 (+143) Creative writing 1433 rank 69 vs 1305 (+128) Instruction following 1472 rank 34 vs 1348 (+124) Hard prompts 1501 rank 33 vs 1384 (+117) Long prompts 1482 rank 41 vs 1369 (+113) Multi-turn 1474 rank 50 vs 1359 (+115) Expert 1510 rank 30 vs 1387 (+123)	1474 ±5	1365 ±6	+109	41 of 415 31,379 votes	Oct 13, 2026	source
Text: Coding	1525 ±8	1423 ±11	+102	28 of 410 8,116 votes	Oct 13, 2026	source
WebDev	1606 ±7	not rated		27 of 142 16,470 votes	Oct 13, 2026	source
Vision	1273 ±7	not rated		35 of 165 11,157 votes	Oct 9, 2026	source
Agent	-0.011 ±0.007	not rated		35 of 54 86,532 sessions	Oct 14, 2026	source

Rated as glm-5.3-flash; GLM-4.7-Flash as glm-4.7-flash. Text, WebDev and Vision ratings come from people voting between two anonymous answers; Text and Vision are style-controlled, as on arena.ai. Agent is Arena's separate score for real agent sessions, on its own scale. Data: Arena (arena.ai), CC BY 4.0.

Epoch AI

Benchmark	GLM-5.3-Flash	GLM-4.7-Flash	Change	Setting	Run	Source
FrontierMath Tier 4	17.1%	not run		max effort	Aug 27, 2026	source
FrontierMath Tiers 1-3	55.8%	not run		max effort	Aug 27, 2026	source
GPQA Diamond	90.2%	60.5%	+29.7 pts	max effort (vs no setting)	Aug 26, 2026	source
OTIS Mock AIME 2024-2025	93.9%	58.3%	+35.6 pts	max effort (vs no setting)	Aug 26, 2026	source

Run independently by Epoch AI. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.

Price history

USD per 1M tokens, standard tier

We started recording this model's prices on Oct 5, 2026. The history grows with each daily check.

Show as a table

From	Type	Price
Oct 5, 2026	Input	$0.15
Oct 5, 2026	Output	$0.50

Prices

USD per 1M tokens, every type and band, by tier

Type	Price $/1M	In effect
Standard
input	$0.15
cached input	$0.03
output	$0.50

Changelog

Changes we detected on Z.ai's pages

No changes recorded yet.