Anthropic: Claude Opus 4.5 vs OpenAI: GPT-5.2 Chat
Head-to-head API cost, context, and performance comparison. Synced at 11:18:09 AM.
Executive Summary
When evaluating Anthropic: Claude Opus 4.5 against OpenAI: GPT-5.2 Chat, the pricing structure is a key differentiator. OpenAI: GPT-5.2 Chat is approximately 48% more cost-effective per 1 million tokens overall.
However, when looking at raw reasoning capabilities, OpenAI: GPT-5.2 Chat leads with a statistical ELO score of 1390. For tasks involving complex logic, coding, or instruction-following, developers might prefer OpenAI: GPT-5.2 Chat, 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, OpenAI: GPT-5.2 Chat is statistically superior. However, if API burn rate is the primary concern, OpenAI: GPT-5.2 Chat wins out aggressively in pricing.
People Also Ask
Is Anthropic: Claude Opus 4.5 cheaper than OpenAI: GPT-5.2 Chat?
No. OpenAI: GPT-5.2 Chat is the more cost-effective model, operating at a lower price point per 1 million tokens.
Which model has the larger context window?
The Anthropic: Claude Opus 4.5 model has the advantage in memory, offering a massive 200,000 token limit for document ingestion.