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Language modelOpen source

GLM-5.3-Flash

Z.ai

Released
August 26, 2026
Data date
August 29, 2026

Category view

Position within the category

This overview uses only published data from matching cohorts. Missing values never change a rank.

The index averages rank percentiles from 4 documented comparison cohorts. Only models with complete coverage receive a position.

Position
Rank 17 of 26
Index score
35.6 / 100
Coverage
4 / 4

Leaderboard

1Claude Opus 588.9 / 100
2Gemini 3.8 Flash88.5 / 100
3Claude Fable 583.2 / 100
16Gemini 3.1 Pro Preview41.3 / 100
17GLM-5.3-Flash, Current model35.6 / 100
18GLM-5.234.1 / 100
25MiMo-V2.5-Pro12.5 / 100
Source: Vals AI, GPQA DiamondSource: Vals AI, Vibe Code Bench v1.1Source: Vals AI, Terminal-Bench 2.1Source: Vals AI, Finance Agent (v2)

Profile

Specifications and access

Published information about this model. Unknown values are not estimated.

Model type
Open weightsSource
Parameters
320BSource
Active parameters
18BSource
Context window
1,000,000 tokensSource
Notes
Natively multimodal open-weights MoE with 320B total parameters, 18B active parameters, and a 1M-token context window.Source

Pricing

Published prices

Prices remain tied to their documented unit and source.

API input
$0.08 per 1M tokensSource
API output
$0.25 per 1M tokensSource
Cache read
$0.02 per 1M tokensSource

Head-to-head comparisons

Compare this model

Each matchup compares this model with exactly one other model from the same category.

GLM-5.3-Flash vs. Claude Fable 5.1
GLM-5.3-Flash vs. Claude Mythos 5.1
GLM-5.3-Flash vs. Claude Opus 5
GLM-5.3-Flash vs. Claude Fable 5
GLM-5.3-Flash vs. Claude Sonnet 5
GLM-5.3-Flash vs. Claude Mythos 5
GLM-5.3-Flash vs. GPT-6 Astra
GLM-5.3-Flash vs. GPT-5.6 Sol
GLM-5.3-Flash vs. GPT-5.6 Terra
GLM-5.3-Flash vs. GPT-5.6 Luna
GLM-5.3-Flash vs. GPT-5.5
GLM-5.3-Flash vs. GPT-5.4
GLM-5.3-Flash vs. GPT-5.4 mini
GLM-5.3-Flash vs. Gemini 3.8 Flash
GLM-5.3-Flash vs. Gemini 3.7 Flash
GLM-5.3-Flash vs. Gemini 3.6 Flash
GLM-5.3-Flash vs. Gemini 3.5 Flash
GLM-5.3-Flash vs. Gemini 3.1 Pro Preview
GLM-5.3-Flash vs. Gemini 3.5 Flash-Lite
GLM-5.3-Flash vs. Muse Spark 1.3
GLM-5.3-Flash vs. Grok 4.6
GLM-5.3-Flash vs. Grok 4.5
GLM-5.3-Flash vs. Grok 4.3
GLM-5.3-Flash vs. DeepSeek-V4-Pro
GLM-5.3-Flash vs. DeepSeek-V4-Flash
GLM-5.3-Flash vs. Kimi K3
GLM-5.3-Flash vs. Kimi K2.6
GLM-5.3-Flash vs. GLM-5.3
GLM-5.3-Flash vs. GLM-5.2
GLM-5.3-Flash vs. GLM-5.1
GLM-5.3-Flash vs. Qwen 3.8 Max 0902
GLM-5.3-Flash vs. Mistral Large 3
GLM-5.3-Flash vs. Mistral Medium 3.5
GLM-5.3-Flash vs. MiMo-V2.5
GLM-5.3-Flash vs. MiMo-V2.5-Pro

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Evidence

Primary sources and data date

Every statement links to its underlying documentation or leaderboard.