OpenAI GPT-4o narrowly beats the xAI Grok 2 in the ai language models category, particularly in design, scoring 6.7/10 vs 6.3/10. If you want the better overall performer, OpenAI GPT-4o is the clear pick.
Scores are relative within the ai language modelscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
Lower cost = better value. Free = open-source self-hosted.
| Metric | OpenAI GPT-4o | Grok 2 |
|---|---|---|
| Input (Prompt) | $2.50/1M | ✓$2.00/1M |
| Output (Completion) | $10.00/1M | $10.00/1M |
| Open Source | Proprietary | Proprietary |
Context Window (tokens)
| Metric | OpenAI GPT-4o | Grok 2 |
|---|---|---|
| Max Output | ✓16,384 tok | 4,096 tok |
| Speed | ✓120 tok/s | 100 tok/s |
| Time to First Token | ✓500ms | 600ms |
| Languages | ✓50+ | 25+ |
Higher is better. Industry-standard AI evaluation benchmarks.
OpenAI GPT-4o
Grok 2
OpenAI GPT-4o
Grok 2
OpenAI GPT-4o
Grok 2
OpenAI GPT-4o
Grok 2
OpenAI GPT-4o
Grok 2
| Feature | OpenAI GPT-4o | Grok 2 |
|---|---|---|
| Reasoning / Chain-of-Thought | ✕ | ✕ |
| Vision (Image Input) | ✓ | ✓ |
| Audio Input | ✓ | ✕ |
| Video Input | ✕ | ✕ |
| Image/Audio Output | ✓ | ✕ |
| Function Calling / Tools | ✓ | ✓ |
| JSON Mode | ✓ | ✓ |
| Real-time Web Access | ✕ | ✓ |
| Fine-tuning Support | ✓ | ✕ |
| Batch API | ✓ | ✕ |
| Streaming | ✓ | ✓ |
| Open Source | ✕ | ✕ |
| Field | OpenAI GPT-4o | Grok 2 |
|---|---|---|
| Provider | OpenAI | xAI |
| Knowledge Cutoff | 2024-04 | real-time |
| Best For | generalcodingvisionmultimodal | current eventsresearchreal time infogeneral |
Buy OpenAI GPT-4o if…
Buy the OpenAI GPT-4o if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Buy xAI Grok 2 if…
The xAI Grok 2 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
OpenAI GPT-4o narrowly beats the xAI Grok 2 in the ai language models category, particularly in design, scoring 6.7/10 vs 6.3/10. If you want the better overall performer, OpenAI GPT-4o is the clear pick.
Yes, OpenAI GPT-4o scores higher overall (9.2 vs 8.5).
Check the latest prices using the buy links above.
Buy the OpenAI GPT-4o if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
The xAI Grok 2 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.