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o1 vs Claude Opus 4.5

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OpenAI · 200k context  |  Anthropic · 200k context

Pricing Comparison

Metrico1Claude Opus 4.5
Input / 1M tokens$15$15
Output / 1M tokens$60$75
Cached input / 1M$7.5$1.5
Context window200k200k
ProviderOpenAIAnthropic

Cost Calculator

💰 o1 saves $2,250.00/month (14% cheaper)
Oo1CHEAPER
Per request$0.0450
Daily$450.00
Monthly$13,500.00
Yearly$164,250.00
AClaude Opus 4.5
Per request$0.0525
Daily$525.00
Monthly$15,750.00
Yearly$191,625.00
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Choose o1 when…

  • ✓ Cheaper for generation-heavy workloads (lower output cost)
  • ✓ Optimized for: Hard reasoning problems
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Choose Claude Opus 4.5 when…

  • ✓ Cheaper cached price ($1.5 vs $7.5/1M)
  • ✓ Optimized for: Complex reasoning & coding

Related Comparisons

o1 vs GPT-5o1 vs GPT-5 Minio1 vs GPT-4.1o1 vs GPT-4.1 MiniClaude Opus 4.5 vs GPT-5Claude Opus 4.5 vs GPT-5 Mini