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OpenAI: GPT-6.1 Sol Pro vs Z.ai: GLM 5.3 Prime

Head-to-head API cost, context, and performance comparison. Synced at 1:36:36 PM.

Executive Summary

When evaluating OpenAI: GPT-6.1 Sol Pro against Z.ai: GLM 5.3 Prime, the pricing structure is a key differentiator. Z.ai: GLM 5.3 Prime is approximately 3% more cost-effective per 1 million tokens overall.

However, when looking at raw reasoning capabilities, Z.ai: GLM 5.3 Prime leads with a statistical ELO score of 1452. For tasks involving complex logic, coding, or instruction-following, developers might prefer Z.ai: GLM 5.3 Prime, provided their budget allows for the API burn rate.

Raw Technical comparison

Metric
OpenAI: GPT-6.1 Sol Pro
Z.ai: GLM 5.3 Prime
Performance (ELO)
1450
1452
Input Cost / 1M
$2.00
$2.80
Output Cost / 1M
$10.00
$8.80
Context Window
1,050,000 tokens
1,000,000 tokens

Verdict

If you are looking for pure performance and capability, Z.ai: GLM 5.3 Prime is statistically superior. However, if API burn rate is the primary concern, Z.ai: GLM 5.3 Prime wins out aggressively in pricing.

People Also Ask

Is OpenAI: GPT-6.1 Sol Pro cheaper than Z.ai: GLM 5.3 Prime?

No. Z.ai: GLM 5.3 Prime 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-6.1 Sol Pro model has the advantage in memory, offering a massive 1,050,000 token limit for document ingestion.

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