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

Head-to-head API cost, context, and performance comparison. Synced at 1:38:02 PM.

Executive Summary

When evaluating Z.ai: GLM 5.3 against OpenAI: GPT-6.1 Sol, the pricing structure is a key differentiator. Z.ai: GLM 5.3 is approximately 52% more cost-effective per 1 million tokens overall.

However, when looking at raw reasoning capabilities, OpenAI: GPT-6.1 Sol leads with a statistical ELO score of 1440. For tasks involving complex logic, coding, or instruction-following, developers might prefer OpenAI: GPT-6.1 Sol, provided their budget allows for the API burn rate.

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Raw Technical comparison

Metric
Z.ai: GLM 5.3
OpenAI: GPT-6.1 Sol
Performance (ELO)
1440
1440
Input Cost / 1M
$1.40
$2.00
Output Cost / 1M
$4.40
$10.00
Context Window
1,048,576 tokens
1,050,000 tokens

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 5.3 wins out aggressively in pricing.

People Also Ask

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

Yes. Z.ai: GLM 5.3 is cheaper for both input and output generation compared to OpenAI: GPT-6.1 Sol. Exploring alternatives often yields cost reductions.

Which model has the larger context window?

The OpenAI: GPT-6.1 Sol model has the advantage in memory, offering a massive 1,050,000 token limit for document ingestion.

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