What is SWE-Bench Pro and why does GLM-5.1 topping it matter?

SWE-Bench Pro benchmarks AI on real GitHub issues. GLM-5.1's 38.6% score beats GPT-5.4's 38.2%, hinting at better coding chops — but only for short tasks.

Will GLM-5.1 replace tools like GitHub Copilot?

Not yet. It falters after long contexts; Copilot's ecosystem and integrations keep it ahead for teams.

How do I test GLM-5.1 failure modes myself?

Grab weights from Hugging Face, feed 100k+ token repos via LM Studio. Track resolve rates on your bugs.

🤖 Large Language Models

GLM-5.1 Edges Out GPT-5.4 on SWE-Bench Pro — Failure Modes Reveal the Cracks

Developers chasing AI coding assistants just got a wake-up call. GLM-5.1 scores higher than GPT-5.4 on SWE-Bench Pro — yet it crumbles in marathon sessions.

theAIcatchup Apr 09, 2026 4 min read

GLM-5.1 outperforming GPT-5.4 on SWE-Bench Pro leaderboard chart

⚡ Key Takeaways

GLM-5.1 narrowly leads GPT-5.4 on SWE-Bench Pro, pressuring OpenAI pricing. 𝕏
Long-context failures after 100k tokens undermine benchmark hype for real dev work. 𝕏
Hybrid model stacks and wrappers will dominate as competition intensifies. 𝕏

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#AI coding benchmarks #GLM-5.1 #GPT-5.4 #SWE-Bench Pro

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Originally reported by Towards AI

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