Z.ai · open weights on Arena · first on Arena 10 February 2026

glm-5

88 days for open weights to match gemini-3-pro

This open-weights model matched the score of gemini-3-pro in WebDev 88 days after gemini-3-pro took first place.

Embed

Who held first place

<iframe src="https://jesseahawkins.com/frontier/embed/" title="Frontier: who held first place on each Arena leaderboard, and for how long" width="100%" height="560" style="border:0;max-width:100%" loading="lazy"></iframe>

Credits LMArena.

The open-weights catch-up

<iframe src="https://jesseahawkins.com/frontier/embed/catch-up/" title="Frontier: the days until open weights matched each closed leader" width="100%" height="900" style="border:0;max-width:100%" loading="lazy"></iframe>

Credits LMArena.

The saturation clock

<iframe src="https://jesseahawkins.com/frontier/embed/clock/" title="Frontier: the days from each benchmark’s release to a model at 90%" width="100%" height="640" style="border:0;max-width:100%" loading="lazy"></iframe>

Credits Epoch AI.

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Cite

This page

Jesse Hawkins, “glm-5 · Frontier”, jesseahawkins.com, data retrieved 30 Oct 2026. https://jesseahawkins.com/frontier/glm-5/. Data: LMArena, Arena leaderboard dataset, revision 4491b06, CC BY 4.0; Epoch AI, Capabilities & benchmarking, CC BY 4.0.

BibTeX

@misc{hawkins2026frontierglm5,
  author = {Hawkins, Jesse},
  title = {{glm-5 · Frontier}},
  year = {2026},
  howpublished = {\url{https://jesseahawkins.com/frontier/glm-5/}},
  note = {Data: LMArena, Arena leaderboard dataset, revision 4491b06, CC BY 4.0; Epoch AI, Capabilities \& benchmarking, CC BY 4.0, retrieved 2026-10-30}
}

Arena · LMArena

LMArena, "Arena leaderboard dataset", Hugging Face, revision 4491b06. https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset. CC BY 4.0.

Benchmarks · Epoch AI

Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks' [online resource]. CC BY 4.0.

Download

Post on X

Text: best place 7

place 61 of 419 on 28 October 2026

1st10th

On the board: 10 February 2026 to 28 October 2026, the newest snapshot
Score: 1446 (1442–1450) on 28 October 2026 · 29,255 votes

WebDev: best place 6

place 87 of 152 on 28 October 2026

1st10th

On the board: 12 February 2026 to 28 October 2026, the newest snapshot
Score: 1436 (1427–1444) on 28 October 2026 · 7,465 votes
Matched: gemini-3-pro on 12 February 2026, 88 days after it took first place

Epoch AI: GLM-5

released 11 February 2026 · Open weights (unrestricted)

FrontierMath-2025-02-28-Private 16.4%
FrontierMath-Tier-4-2025-07-01-Private 2.1%
GPQA diamond 87.8%
OTIS Mock AIME 2024-2025 80.0%
SWE-Bench verified 72.1%

Sources

Arena scores come from people voting between two anonymous answers. First place is the highest score; the top two are often within each other’s margin of error. LMArena, Arena leaderboard dataset, revision 4491b06, retrieved 30 October 2026; Epoch AI, Capabilities & benchmarking, retrieved 30 October 2026. Both CC BY 4.0.