Grok 3 vs o3
Grok 3 leads in 3 of 8 categories
Arena ELO
o3
Cheaper
Grok 3
Faster
Grok 3
Detailed Comparison
| Category | Grok 3 | o3 |
|---|---|---|
| Provider | xAI | OpenAI |
| Context Window | 131K | 200K WIN |
| Input Price ($/1M) | $3 WIN | $10 |
| Output Price ($/1M) | $15 WIN | $40 |
| Arena ELO | 1325 | 1350 WIN |
| Coding | unknown | unknown |
| Reasoning | 93.3% AIME 2025 | unknown |
| Speed (tokens/sec) | ~55 t/s WIN | ~30 t/s |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, Grok 3 or o3?
Grok 3 is approximately 64% cheaper than o3 per million tokens.
Which is better for coding, Grok 3 or o3?
Grok 3 scores unknown on coding benchmarks, while o3 scores unknown.
Which has a larger context window?
Grok 3 supports 131K context, while o3 supports 200K.
Is Grok 3 or o3 open source?
Grok 3 is proprietary. o3 is proprietary.
Which ranks higher on the Chatbot Arena leaderboard?
o3 ranks higher with ELO 1350 vs 1325.
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