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Data checked September 25, 2026
Data checked September 25, 2026
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Data checked September 25, 2026 · Every number links to its sourceRSS · Source on GitHub
Leaderboard/Z.ai
Z.ai

Z.ai · GLM-5

GLM-5.3-Flash

Open weightsGenerally availableNewMIT

First natively multimodal GLM-5 model, on a new 320B/18B hybrid sparse+linear attention base, released as MIT open weights at roughly a tenth of GLM-5.3's price.

AA Intelligence
42#17 of 142
Input / output per 1M
$0.15/ $0.50
Output speed
44tok/s
Context window
1M tokens

Composite indexes

  • Artificial Analysis Intelligence Index#17 of 142
    42independentv4.3.2, reasoning, max effortArtificial Analysis: GLM 5.3 Flash ↗

    Leader: Claude Opus 5.5 at 58

Coding

  • Terminal-Bench 4.0#15 of 88
    32.8%independentreasoning, max effort, AA-runArtificial Analysis: GLM 5.3 Flash ↗

    Leader: Claude Mythos 5.1 at 60.9%

  • Terminal-Bench 2.x#18 of 103
    84.3%independentTerminal-Bench 2.1, reasoning, max effort, AA-runArtificial Analysis: GLM 5.3 Flash ↗

    Leader: Claude Fable 5.1 at 91.4%

  • SciCode#33 of 94
    51.6%independentreasoning, max effort, AA-runArtificial Analysis: GLM 5.3 Flash ↗

    Leader: Claude Opus 5.5 at 66.9%

Agents and tool use

  • GDPval-AA#9 of 103
    1641independentGDPval-AA v2.1, reasoning, max effortArtificial Analysis: GLM 5.3 Flash ↗

    Leader: Claude Opus 5.5 at 1846

Reasoning and knowledge

  • GPQA Diamond#30 of 142
    91.2%independentreasoning, max effort, AA-runArtificial Analysis: GLM 5.3 Flash ↗

    Leader: GPT-6 Astra at 96.1%

  • Humanity’s Last Exam#35 of 147
    39.9%independentreasoning, max effort, no tools, AA-runArtificial Analysis: GLM 5.3 Flash ↗

    Leader: Claude Opus 5.5 at 61.4%

  • CritPt#30 of 139
    15.4%independentreasoning, max effort, AA-runArtificial Analysis: GLM 5.3 Flash ↗

    Leader: GPT-5.6 Sol at 32.3%

Vision and long context

  • AA Long Context Reasoning#31 of 139
    80%independentreasoning, max effort, AA-LCRArtificial Analysis: GLM 5.3 Flash ↗

    Leader: Kimi K3 at 88.7%

Human preference

  • LMArena Text#18 of 54
    1475independentarena entry "glm-5.3-flash", 10,038 votes, checked 2026-09-25Arena (LMArena) text leaderboard ↗

    Leader: Claude Fable 5 at 1506

  • LMArena WebDev#18 of 54
    1612independentarena entry "glm-5.3-flash", 5,954 votes, checked 2026-09-25Arena (LMArena) WebDev/Code leaderboard ↗

    Leader: Claude Opus 5.5 at 1818

Other published results

ResultScoreReported bySource
DeepSWE v1.163.4%vendorZ.ai docs: GLM-5.3-Flash/FlashX ↗
AutomationBench48.8%vendorZ.ai docs: GLM-5.3-Flash/FlashX ↗

Specs

Released
August 26, 2026
Parameters
320B total, 18B active
Size class
100 to 500B
Input
text, image, video
Output
text
Context
1M tokens
Max output
128K tokens
Cached input
$0.03 / 1M
Blended 70/30
$0.255 / 1M
First token
3.42s
  • Price: Z.ai pricing ↗ GLM-5.3-FlashX (about 200 tokens/s, not on the Coding Plan) costs $0.37 in / $1.25 out / $0.075 cached.
  • Speed: Artificial Analysis: GLM 5.3 Flash ↗

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Compare with

  • OpenAIGPT-5.6 Terra42.1
  • AnthropicClaude Opus 4.841.8
  • GoogleGemini 3.8 Flash40.9
  • StepFunStep 5 Preview43.7