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GLM 5 vs GPT-5.1 Instant
Comprehensive side-by-side LLM comparison
GLM 5 leads with 1.5% higher average benchmark score. GPT-5.1 Instant supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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Zhipu AI
GLM-5 is a large language model from Zhipu AI with 745 billion total parameters and 44 billion active parameters per inference, designed for agentic intelligence, advanced reasoning, and frontier-level performance. It features a 200K token context window and targets complex multi-step tasks requiring sustained reasoning and tool use. GLM-5 is available via Zhipu AI's Z.ai platform under an MIT license.
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OpenAI
GPT-5.1 Instant, released by OpenAI in November 2025, is a low-latency variant from the GPT-5.1 family optimized for fast response times and high-throughput workloads. It targets real-time applications, conversational assistants, and production APIs where response speed is a primary requirement alongside GPT-5.1-generation reasoning quality.
3 months newer
GPT-5.1 Instant
OpenAI
2025-11
GLM 5
Zhipu AI
2026-02-11
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GLM 5
Average Score:77.8%(+1.5%)
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GPT-5.1 Instant
Average Score:76.3%
Performance comparison across key benchmark categories
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GLM 5
Coding77.8%(+1.5%)
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GPT-5.1 Instant
Coding76.3%
Provider Availability & Performance
Available providers and their performance metrics
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GLM 5
1 providers
Zhipu AI
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GPT-5.1 Instant
0 providers
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GLM 5
Avg Score:77.8%(+1.5%)
Providers:1
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GPT-5.1 Instant
Avg Score:76.3%
Providers:0