Skip to content
Yardstick
  1. Models
  2. Z.ai
  3. GLM-5.3-Flash

GLM-5.3-Flash

Z.ai · Fast & cheap · Aug 26, 2026NewOpen weights

The first natively multimodal GLM-5 model: fast, very cheap, and close to its larger sibling on several benchmarks.

Announcement (opens in a new tab)
Artificial Analysis Intelligence Index
41.8#14 of 29
API price per 1M tokens
$0.15 / $0.50input / output · $0.24 blended
Context window
1Mup to 128K output tokens
Output speed
51 t/s42s to first answer

Benchmark results

Each row shows this model (blue) against every other model in the catalogue (grey), worst on the left, best on the right.

Overall capability

  • Artificial Analysis Intelligence Index41.8#14 of 29
    11.357.6
  • Epoch Capabilities Index151.9#15 of 16
    146.9167.3
  • LiveBench71.6%#20 of 23
    63.9%83.4%

Coding

  • Terminal-Bench 4.035.8%#9 of 13

    Claude Code harness

    14.6%64.8%
  • Arena WebDev1,610#15 of 27
    1,2631,814

Agents & professional work

  • GDPval-AA1,647#9 of 18
    1,2421,866

Reasoning

  • ARC-AGI-265.8%#7 of 11

    Max effort

    42.4%95%
  • FrontierMath (Tiers 1–3)55.8%#13 of 14

    Max effort

    53%93.7%

Knowledge & science

  • GPQA Diamond90.2%#14 of 14

    Max effort

    90.2%95.8%

Multimodal

  • Arena Vision1,278#8 of 15
    1,1991,301

Human preference

  • Arena Text1,473#14 of 24
    1,4251,525

Specs & pricing

Developer
Z.ai
Released
Aug 26, 2026
Availability
Generally available
API model ID
glm-5.3-flash
Weights
Open · MIT
Parameters
320B (MoE)
Reasoning
Always on
Accepts
Text, Image, Video
Produces
Text
Context window
1,000,000 tokens
Max output
128,000 tokens
Input price
$0.15 / 1M tokens
Output price
$0.50 / 1M tokens
Cached input
$0.03 / 1M tokens

Closest alternatives

Models from other labs nearest to GLM-5.3-Flash on Artificial Analysis Intelligence Index.

  • Gemini 3.8 Flash

    Google

    Intelligence 40.9 · $0.75 / $3.75

    Compare side by side

  • Claude Haiku 5.5

    Anthropic

    Intelligence 43.4 · $0.10 / $0.50

    Compare side by side

  • Kimi K3

    Moonshot AI

    Intelligence 43.6 · $3 / $15

    Compare side by side

Sources

  • Announcement (opens in a new tab)
  • Model documentation (opens in a new tab)
  • Pricing (opens in a new tab)
Yardstick

A plain reading of how today’s SI models compare. Scores are taken from each benchmark’s own leaderboard wherever one exists; anything a lab reported about its own model is marked.

Data as of Oct 8, 2026.

Explore

  • Models
  • Compare
  • Benchmarks
  • Value
  • Labs
  • Methodology & sources

Sources

  • Artificial Analysis (opens in a new tab)
  • Arena (opens in a new tab)
  • Epoch AI Benchmarking Hub (opens in a new tab)
  • ARC Prize (opens in a new tab)
  • Terminal-Bench (opens in a new tab)
  • Scale AI Labs (opens in a new tab)

Yardstick is an independent reference and is not affiliated with, sponsored by or endorsed by any lab listed. Product names and logos are trademarks of their respective owners and are used only to identify them. Benchmarks are imperfect proxies: check a model on your own task before you commit to it.

  • Models
  • Compare
  • Benchmarks
  • Value
  • Labs
  • Models
  • Compare
  • Benchmarks
  • Value
  • Labs
  • Models
  • Compare
  • Benchmarks
  • Value
  • Labs