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o4-mini vs Grok 4
A detailed comparison of o4-mini (OpenAI) and Grok 4 (xAI) across pricing, performance, and features.
Pricing Comparison
| Metric | o4-mini | Grok 4 | Difference |
|---|---|---|---|
| Input / 1M tokens | $1.10 | $3.00 | +173% |
| Output / 1M tokens | $4.40 | $15.00 | +241% |
| Context window | 200K | 128K | — |
| Max output | 100K | 16.384K | — |
Benchmark Comparison
| Benchmark | o4-mini | Grok 4 |
|---|---|---|
| MMLU-Pro | 85% | 86% |
| HumanEval | 93.5% | 93% |
| GPQA | 76% | 72% |
Capabilities
| Capability | o4-mini | Grok 4 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✓ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
| web-search | ✗ | ✓ |
o4-mini Strengths
- ✓Affordable reasoning model
- ✓200K context window
- ✓Good for math and science
o4-mini Weaknesses
- ✗Slower than non-reasoning models
- ✗Reasoning tokens add to effective cost
Grok 4 Strengths
- ✓Built-in web search and real-time data
- ✓Strong reasoning
- ✓$25 free credits for new users
Grok 4 Weaknesses
- ✗Premium pricing for its benchmark tier
- ✗Additional charges for tool invocations ($2.50-$5/1K calls)
- ✗Smaller ecosystem than OpenAI/Anthropic
Quick Verdict
Best value: o4-mini is the more affordable option at $1.1/$4.4 per 1M tokens.
Higher benchmarks: o4-mini scores higher on average across available benchmarks (84.8% avg).
Larger context: o4-mini supports 200K tokens.
Choose o4-mini if cost matters most. Choose Grok 4 if you need the best possible quality for complex tasks.