Z.ai: GLM 4.5 vs Qwen: Qwen3.5 Plus 2026-02-15
Head-to-head API cost, context, and performance comparison. Synced at 11:18:25 AM.
Executive Summary
When evaluating Z.ai: GLM 4.5 against Qwen: Qwen3.5 Plus 2026-02-15, the pricing structure is a key differentiator. Qwen: Qwen3.5 Plus 2026-02-15 is approximately 35% more cost-effective per 1 million tokens overall.
However, when looking at raw reasoning capabilities, Qwen: Qwen3.5 Plus 2026-02-15 leads with a statistical ELO score of 1120. For tasks involving complex logic, coding, or instruction-following, developers might prefer Qwen: Qwen3.5 Plus 2026-02-15, provided their budget allows for the API burn rate.
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Raw Technical comparison
Verdict
If you are looking for pure performance and capability, Tie is statistically superior. However, if API burn rate is the primary concern, Qwen: Qwen3.5 Plus 2026-02-15 wins out aggressively in pricing.
People Also Ask
Is Z.ai: GLM 4.5 cheaper than Qwen: Qwen3.5 Plus 2026-02-15?
No. Qwen: Qwen3.5 Plus 2026-02-15 is the more cost-effective model, operating at a lower price point per 1 million tokens.
Which model has the larger context window?
The Qwen: Qwen3.5 Plus 2026-02-15 model has the advantage in memory, offering a massive 1,000,000 token limit for document ingestion.