o1 vs Grok 2
Pricing, context window, and benchmark comparison · Last updated April 2026
Grok 2 is cheaper than o1 at $2.00/1M/1M vs $15.00/1M/1M input tokens — a 7.5x cost difference. o1 scores higher on quality benchmarks (ELO 1350). Choose Grok 2 for cost-sensitive workloads; choose o1 for maximum quality.
Which is cheaper: o1 or Grok 2?
Grok 2 is the cheaper option at $2.00/1M per 1M input tokens, compared to $15.00/1M for o1. That is a 7.5x cost difference on input tokens. Output pricing follows a similar pattern: o1 charges $60.00/1M/1M vs $10.00/1M/1M for Grok 2.
Which has better quality: o1 or Grok 2?
Based on LMSYS Chatbot Arena rankings, o1 achieves a higher ELO score (1350 vs 1290), suggesting stronger performance on open-ended tasks. o1 excels at best-in-class reasoning on complex problems. Grok 2 is known for real-time x (twitter) data access.
Which should you choose: o1 or Grok 2?
- → Best-in-class reasoning on complex problems
- → Exceptional at math, science, and formal logic
- → Large 200K context window
- → Real-time X (Twitter) data access
- → Strong at current events and trending topics
- → Good humor and conversational ability
Frequently Asked Questions
Which is cheaper: o1 or Grok 2?
Grok 2 is cheaper at $2.00/1M per 1M input tokens, making it 7.5x more affordable.
Which has better quality: o1 or Grok 2?
o1 scores higher on the LMSYS Chatbot Arena with an ELO of 1350, suggesting better overall quality for most tasks.
Which has a larger context window: o1 or Grok 2?
o1 has a larger context window at 200K tokens.
Should I choose o1 or Grok 2?
Choose Grok 2 if cost is the priority. Choose o1 if benchmark quality is most important. Consider your specific use case: o1 is best for reasoning and math, while Grok 2 excels at research and creative-writing.
Is o1 or Grok 2 open source?
o1 is proprietary. Grok 2 is proprietary.