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OpenAI: o1 vs OpenAI: GPT-5.2 Pro

Head-to-head API cost, context, and performance comparison. Synced at 11:29:14 AM.

Executive Summary

When evaluating OpenAI: o1 against OpenAI: GPT-5.2 Pro, the pricing structure is a key differentiator. OpenAI: o1 is approximately 60% more cost-effective per 1 million tokens overall.

However, when looking at raw reasoning capabilities, OpenAI: GPT-5.2 Pro leads with a statistical ELO score of 1300. For tasks involving complex logic, coding, or instruction-following, developers might prefer OpenAI: GPT-5.2 Pro, provided their budget allows for the API burn rate.

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Raw Technical comparison

Metric
OpenAI: o1
OpenAI: GPT-5.2 Pro
Performance (ELO)
1300
1300
Input Cost / 1M
$15.00
$21.00
Output Cost / 1M
$60.00
$168.00
Context Window
200,000 tokens
400,000 tokens

Verdict

If you are looking for pure performance and capability, Tie is statistically superior. However, if API burn rate is the primary concern, OpenAI: o1 wins out aggressively in pricing.

People Also Ask

Is OpenAI: o1 cheaper than OpenAI: GPT-5.2 Pro?

Yes. OpenAI: o1 is cheaper for both input and output generation compared to OpenAI: GPT-5.2 Pro. Exploring alternatives often yields cost reductions.

Which model has the larger context window?

The OpenAI: GPT-5.2 Pro model has the advantage in memory, offering a massive 400,000 token limit for document ingestion.

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