Grok Build 0.1 vs o3-pro
Detailed pricing comparison and cost analysis.
Updated September 2026
Cost Simulator
| Feature | Grok Build 0.1 | o3-pro |
|---|---|---|
| Provider | xAI | OpenAI |
| Input Price (1M) | $1.00 | $20.00 |
| Output Price (1M) | $2.00 | $80.00 |
| Context Window | 256,000 | 200,000 |
Verdict
Grok Build 0.1 costs $1.00 per 1M input tokens and $2.00 per 1M output tokens. o3-pro costs $20.00 per 1M input tokens and $80.00 per 1M output tokens. Grok Build 0.1 is 95% cheaper on input tokens than o3-pro. For output tokens, Grok Build 0.1 is the more affordable option at $2.00/1M vs $80.00.
On context window, Grok Build 0.1 supports 256,000 tokens — meaning it can fit more conversation history, documents, or code in a single request. This matters for RAG pipelines, long document analysis, and agentic workflows where context builds up over many turns.
When to choose Grok Build 0.1
- ✓ You need the lowest input token cost ($ 1.00/1M)
- ✓ Your workload is output-heavy — Grok Build 0.1 generates text cheaper
- ✓ You need a larger context window (256,000 tokens)
- ✓ You are already integrated with xAI
When to choose o3-pro
- ✓ You are already integrated with OpenAI
Use the calculator above to simulate your specific workload and find the exact break-even point. For most applications, the cheapest model is the one that minimises your total monthly bill given your input-to-output token ratio.
Frequently Asked Questions
Is Grok Build 0.1 cheaper than o3-pro? ▼
Grok Build 0.1 is cheaper on input tokens at $1.00/1M vs $20.00/1M for o3-pro — a 95% saving.
What is the context window of Grok Build 0.1 vs o3-pro? ▼
Grok Build 0.1 has a 256,000-token context window. o3-pro has a 200,000-token context window. Grok Build 0.1 supports the larger context, suitable for longer documents and agentic workflows.
Which model is better: Grok Build 0.1 or o3-pro? ▼
The best choice depends on your use case. For cost efficiency on input tokens, Grok Build 0.1 is the cheaper option. For maximum context length, Grok Build 0.1 supports 256,000 tokens. Use the comparison table above to find the right fit for your workload.