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Z.ai's GLM-5.3 achieves SOTA in coding and cybersecurity via post-training

By PulseAugur Editorial · [16 sources] ·

Z.ai has released GLM-5.3, an updated model that achieves significant performance gains through scaled post-training rather than changes to its base model. The model shows marked improvements in complex coding tasks, particularly on long-horizon benchmarks like Terminal-Bench 3.0, and has demonstrated emergent capabilities in cybersecurity, topping the CyberGym benchmark. While GLM-5.3 is available via API and specific plans, Z.ai plans to release the model weights in approximately two weeks after completing safety evaluations. AI

IMPACT GLM-5.3's advancements in long-horizon coding and cybersecurity could accelerate adoption of specialized AI agents in development and security sectors.

RANK_REASON Z.ai is a frontier lab, and GLM-5.3 is a new model release with significant benchmark claims.

Read on Latent Space (swyx) →

AI-generated summary · Google Gemini · from 16 sources. How we write summaries →

Z.ai's GLM-5.3 achieves SOTA in coding and cybersecurity via post-training

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Z.ai is a frontier lab, and GLM-5.3 is a new model release with significant benchmark claims.
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16 independent sources
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model release, product
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47 days old
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COVERAGE [16]

  1. Latent Space (swyx) TIER_1 English(EN) ·

    [AINews] Death of Params: Z.ai CEO Jie Tang on GLM 5.3 and the new Post-training Scaling Law

    Every lab CEO is on X now

  2. The Decoder TIER_1 English(EN) · Matthias Bastian ·

    Zhipu AI releases GLM-5.3, claims it's the strongest open-weights coding model

    <p><img alt="Grid of black squares with white Z logo against a blue color gradient, brand pattern by Zhipu AI." class="attachment-full size-full wp-post-image" height="768" src="https://the-decoder.com/wp-content/uploads/2026/04/zhipu-ai-logo-wall.jpg" style="height: auto; margin…

  3. MarkTechPost TIER_1 English(EN) · Asif Razzaq ·

    Z.ai Ships GLM-5.3 Without Retraining the Base Model: Better at Complex Coding and Long-Horizon Tasks

    <p>Z.ai released GLM-5.3 on August 14, 2026. The model reuses the 743B GLM-5.2 base unchanged. Every reported gain comes from scaled post-training: more long-horizon task environments, more environment types, longer training. Terminal-Bench 3.0 moves from 4.6 to 28.3, and DeepSWE…

  4. Towards AI TIER_1 English(EN) · Caspar Bannink - AI Engineer ·

    GLM-5.3 vs GLM-5.2: What Z.ai Actually Changed for Coding Agents

    <div class="medium-feed-item"><p class="medium-feed-image"><a href="https://pub.towardsai.net/glm-5-3-vs-glm-5-2-what-z-ai-actually-changed-for-coding-agents-dc2dcb0b3a6d?source=rss----98111c9905da---4"><img src="https://cdn-images-1.medium.com/max/1200/1*FZALMZrkMLBItdiWLsEKzA.p…

  5. Mastodon — sigmoid.social TIER_1 English(EN) · [email protected] ·

    GLM 5.3 (Z.AI) offers 1M-token context and open weights — a rare combo at $1.4 in / $4.4 out per 1M, beating many closed competitors. https:// olud.ai/latest.ht

    GLM 5.3 (Z.AI) offers 1M-token context and open weights — a rare combo at $1.4 in / $4.4 out per 1M, beating many closed competitors. https:// olud.ai/latest.html # AI # LLM # OpenSource

    LINKS olud.ai/latest.html
  6. Mastodon — sigmoid.social TIER_1 English(EN) · [email protected] ·

    Z.ai released GLM-5.3. All gains over GLM-5.2 come from scaled post-training. - Open-source SOTA for coding - Emergent cybersecurity SOTA (doubles exploit score

    Z.ai released GLM-5.3. All gains over GLM-5.2 come from scaled post-training. - Open-source SOTA for coding - Emergent cybersecurity SOTA (doubles exploit scores) - New API reasoning levels Open weights drop in 2 weeks. # AI # LLM

  7. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    GLM 5.3 from Z.ai is now available on AI Gateway. Source: Vercel Blog https:// vercel.com/changelog/glm-5-3-n ow-available-on-ai-gateway # AI

    GLM 5.3 from Z.ai is now available on AI Gateway. Source: Vercel Blog https:// vercel.com/changelog/glm-5-3-n ow-available-on-ai-gateway # AI

    LINKS vercel.com/…/glm-5-3-now-available-on-ai-…
  8. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    Z.​ai has released GLM-5.3, claiming the top spot from Anthropic and OpenAI on the CyberGym benchmark. But before upgrading, look at the fine print on active ex

    Z.​ai has released GLM-5.3, claiming the top spot from Anthropic and OpenAI on the CyberGym benchmark. But before upgrading, look at the fine print on active exploitation: https://www. developer-tech.com/news/z-ai-g lm-5-3-cybergym-cybersecurity-ai-model-benchmark/ # cybersecurit…

  9. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    Z.ai's GLM-5.3 tops vulnerability-finding benchmarks but stumbles on actual exploitation. The model scored 84.5% on CyberGym—ahead of Anthropic's Mythos 5—yet d

    Z.ai's GLM-5.3 tops vulnerability-finding benchmarks but stumbles on actual exploitation. The model scored 84.5% on CyberGym—ahead of Anthropic's Mythos 5—yet drops to 54.4% when tasked with chaining exploits together. Z.ai is delaying weight release until late August, adopting r…

    LINKS implicator.ai/z-ai-delays-glm-5-3-weights…
  10. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    China’s Zhipu AI is proving that bypassing foreign API restrictions isn't just about catching up—it's about specializing. By launching GLM-5.3, they aren't just

    China’s Zhipu AI is proving that bypassing foreign API restrictions isn't just about catching up—it's about specializing. By launching GLM-5.3, they aren't just chasing general LLM hype. Instead, they doubled performance on the SWE-Marathon software benchmark and topped CyberGym,…

  11. dev.to — LLM tag TIER_1 Deutsch(DE) · Nokka ·

    GLM-5.3 — Zhipu AI Releases Open-Weight Model, Outperforming Fable 5, 743B MoE

    <h1> GLM-5.3, Zhipu AI ปล่อยโมเดล Open-Weight ที่ชนะ Fable 5 และ DeepSeek V4 Pro 0813 บน Terminal-Bench, 743B MoE, CyberGym สูงสุด, Open Weights มาใน 2 สัปดาห์ </h1> <p><em>โดย Nokka (นก-กา) | 14 สิงหาคม 2026</em></p> <p><em>บทความนี้เขียนโดย AI (DeepSeek V4 Pro) ผ่าน Hermes Agen…

  12. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    Z.ai has released GLM-5.3, an upgraded version of its language model that improves coding and long-horizon task performance without retraining the base model. T

    Z.ai has released GLM-5.3, an upgraded version of its language model that improves coding and long-horizon task performance without retraining the base model. The model shows significant gains on coding benchmarks including Terminal-Bench 3.0 and DeepSWE v1.1, and unexpectedly st…

  13. Mastodon — mastodon.social TIER_1 Polski(PL) · aisight ·

    Chinese GLM-5.3 dominated open AI model rankings, matching Claude systems in performance. However, creators are withholding model weights due to concerns about misuse.

    Chiński GLM-5.3 zdominował rankingi otwartych modeli AI, dorównując wydajnością systemom Claude. Twórcy wstrzymują jednak publikację wag modelu z obawy przed jego skutecznością w łamaniu zabezpieczeń. # si # ai # sztucznainteligencja # wiadomości # informacje # technologia https:…

    LINKS aisight.pl/…/lider-z-pekinu-glm-5-3-wchod… aisight.pl/…/generatory-obrazow-ai-stereo…
  14. Mastodon — mastodon.social TIER_1 日本語(JA) · [email protected] ·

    Z.ai releases open-weight AI model "GLM-5.3" with excellent coding capabilities, achieving 50% performance improvement over previous model https://fed.brid.gy/r/https://gigazine.net/news/20260817-z-ai-glm-5-3/

    Z.aiがコーディング能力に優れたオープンウェイトAIモデル「GLM-5.3」リリース、前モデル比で50％の性能向上 https:// fed.brid.gy/r/https://gigazine .net/news/20260817-z-ai-glm-5-3/

  15. Mastodon — mastodon.social TIER_1 English(EN) · [email protected] ·

    Z.ai GLM-5.3 and Google Gemini Z.ai releases GLM-5.3 on August 14. The new model, scaling from the same base as GLM-5.2, boosts internal coding benchmark by 50%

    Z.ai GLM-5.3 and Google Gemini Z.ai releases GLM-5.3 on August 14. The new model, scaling from the same base as GLM-5.2, boosts internal coding benchmark by 50%. It leads open-source scores # news # ai

  16. Mastodon — mastodon.social TIER_1 日本語(JA) · [email protected] ·

    Z.ai Announces AI Model "GLM-5.3" - Enhanced Coding and Vulnerability Analysis, Weights to be Released in Two Weeks https://gihyo.jp/article/2026/08/glm-5.3?utm_source=feed #gihyo #技術評論社 #gihyo_jp #AI #Model

    Z.ai、AIモデル「GLM-5.3」を発表 ——コーディングと脆弱性解析を強化、重みは2週間後に公開予定 https:// gihyo.jp/article/2026/08/glm-5 .3?utm_source=feed # gihyo # 技術評論社 # gihyo_jp # AI # モデル

    LINKS gihyo.jp/…/glm-5.3

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