OpenAI: GPT-5 vs Z.ai: GLM 4.6
Head-to-head API cost, context, and performance comparison. Synced at 2:29:34 PM.
Executive Summary
When evaluating OpenAI: GPT-5 against Z.ai: GLM 4.6, the pricing structure is a key differentiator. Z.ai: GLM 4.6 is approximately 80% more cost-effective per 1 million tokens overall.
However, when looking at raw reasoning capabilities, Z.ai: GLM 4.6 leads with a statistical ELO score of 1426. For tasks involving complex logic, coding, or instruction-following, developers might prefer Z.ai: GLM 4.6, 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, Z.ai: GLM 4.6 wins out aggressively in pricing.
People Also Ask
Is OpenAI: GPT-5 cheaper than Z.ai: GLM 4.6?
No. Z.ai: GLM 4.6 is the more cost-effective model, operating at a lower price point per 1 million tokens.
Which model has the larger context window?
The OpenAI: GPT-5 model has the advantage in memory, offering a massive 400,000 token limit for document ingestion.