o1 vs DeepSeek R1
Pricing, context window, and benchmark comparison · Last updated April 2026
DeepSeek R1 is cheaper than o1 at $0.55/1M/1M vs $15.00/1M/1M input tokens — a 27.3x cost difference. DeepSeek R1 scores higher on quality benchmarks (ELO 1360). Choose DeepSeek R1 for cost-sensitive workloads; both are strong choices depending on your budget.
Which is cheaper: o1 or DeepSeek R1?
DeepSeek R1 is the cheaper option at $0.55/1M per 1M input tokens, compared to $15.00/1M for o1. That is a 27.3x cost difference on input tokens. Output pricing follows a similar pattern: o1 charges $60.00/1M/1M vs $2.19/1M/1M for DeepSeek R1.
Which has better quality: o1 or DeepSeek R1?
Based on LMSYS Chatbot Arena rankings, DeepSeek R1 achieves a higher ELO score (1360 vs 1350), suggesting stronger performance on open-ended tasks. o1 excels at best-in-class reasoning on complex problems. DeepSeek R1 is known for o1-level reasoning at 20x lower cost than openai o1.
Which should you choose: o1 or DeepSeek R1?
- → Best-in-class reasoning on complex problems
- → Exceptional at math, science, and formal logic
- → Large 200K context window
- → o1-level reasoning at 20x lower cost than OpenAI o1
- → Open source reasoning model
- → Chain-of-thought reasoning visible to users
Frequently Asked Questions
Which is cheaper: o1 or DeepSeek R1?
DeepSeek R1 is cheaper at $0.55/1M per 1M input tokens, making it 27.3x more affordable.
Which has better quality: o1 or DeepSeek R1?
DeepSeek R1 scores higher on the LMSYS Chatbot Arena with an ELO of 1360, suggesting better overall quality for most tasks.
Which has a larger context window: o1 or DeepSeek R1?
o1 has a larger context window at 200K tokens.
Should I choose o1 or DeepSeek R1?
Choose DeepSeek R1 if cost is the priority. Choose DeepSeek R1 if benchmark quality is most important. Consider your specific use case: o1 is best for reasoning and math, while DeepSeek R1 excels at reasoning and math.
Is o1 or DeepSeek R1 open source?
o1 is proprietary. DeepSeek R1 is open source.