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  1. Models
  2. Text
  3. Z.AI

GLM 5.3 Flash

ox-alpha out of stealth! GLM-5.3 Flash is Z.ai's first natively multimodal GLM-5 model, with 320B total parameters and just 18B active parameters for efficient coding, agentic work, and precise 1M-token context. Its hybrid sparse-and-linear attention architecture helps it outperform GLM-5.2 at one-tenth the price while approaching Claude Opus 4.8 on coding and agentic benchmarks.

  • Reasoning
  • Vision
  • Video Input
  • Tool Calling
  • Structured Output

Added Aug 26, 2026

Model weights

Pricing

Auto routing · per 1M tokens
Input
$0.10
Output
$0.30
Cache read
$0.025
Compare provider prices

Specifications

Context window
1M
Max output
131.1K
Parameters
320B / 18B
Total / active
Avg output (7d)
1.3K tokens
Longer than 80% of models

Benchmarks

Sourced from Artificial Analysis.

Intelligence Index

41.8

Intelligence Index: 41.8
Better than 93% of models compared

Coding Index

71.5

Coding Index: 71.5
Better than 85% of models compared

Agentic Index

50.9

Agentic Index: 50.9
Better than 91% of models compared

Agentic work

AutomationBench-AA

Workflow automation with guardrail penalties

60.4%

Better than 85% of models compared

AutomationBench-AA Tasks Completed

Fully completed workflows without guardrail violations

25.4%

Better than 77% of models compared

Harvey LAB-AA v1.1

Legal tasks fully passed without material hallucinations

0.8%

Better than 32% of models compared

AA-Briefcase v1.1

Agentic knowledge work (Elo)

1452 Elo

Better than 79% of models compared

GDPval-AA v2.1

Economically valuable tasks (Elo)

1642 Elo

Better than 93% of models compared

Document reasoning

GDP.pdf

Professional PDF reasoning: all-pass rate

15.4%

Better than 57% of models compared

AA-LCR v1.1

Long context reasoning with updated grading

80.0%

Better than 86% of models compared

MLCR-AA

Medical long-context reasoning

11.7%

Better than 40% of models compared

Reasoning

HLE

Humanity's Last Exam

39.9%

Better than 87% of models compared

CritPt

Research-level physics reasoning

15.4%

Coding

Terminal-Bench v4.0

Practical coding and terminal tasks

32.8%

Better than 81% of models compared

SciCode

Python programming for scientific computing

51.6%

Better than 59% of models compared

Knowledge

AA-Omniscience Accuracy

Proportion of correctly answered questions

27.5%

AA-Omniscience Hallucination Rate

Rate of incorrect answers among non-correct responses

27.6%

Legacy benchmarks

GPQA Diamond (legacy)

Graduate-level scientific reasoning

91.2%

Better than 92% of models compared

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

80.0%

Better than 86% of models compared

GDPval-AA (unversioned / legacy)

Economically valuable tasks

57.1%

Last updated Oct 26, 2026

Artificial Analysis

Providers

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Apex Flash 1

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Apex Flash 1 Abliterated

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Apex Flash 1 Abliterated is an experimental derivative of Cantina Security and Yeta's Apex Flash 1 with modified refusal behavior.

GLM 5.3 Flash Cybersecurity

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GLM 5.3 Flash Cybersecurity is a cybersecurity-focused variant based on the uncensored model, with provider moderation for illegal activities. It supports always-on reasoning, image understanding, tool calling, and a 1,048,576-token context window.

GLM 5.3 Flash Uncensored

z-ai/glm-5.3-flash-uncensored

GLM 5.3 Flash Uncensored is an uncensored fine-tune of the efficient 320B mixture-of-experts reasoning model with provider-dependent vision support, built for unrestricted chat, creative writing, coding, agentic work, tool use, and long-context tasks.

GLM 4.7 Flash

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GLM-4.7-Flash is a lightweight 30B model optimized for coding and agentic tasks. Balances high performance with efficiency.

GLM 4.7 Flash Thinking

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GLM-4.7-Flash with extended thinking capabilities for complex reasoning. Lightweight 30B model optimized for coding and agentic tasks.