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Claude Opus 4.6 vs Grok 4
A detailed comparison of Claude Opus 4.6 (Anthropic) and Grok 4 (xAI) across pricing, performance, and features.
Pricing Comparison
| Metric | Claude Opus 4.6 | Grok 4 | Difference |
|---|---|---|---|
| Input / 1M tokens | $5.00 | $3.00 | -40% |
| Output / 1M tokens | $25.00 | $15.00 | -40% |
| Context window | 200K | 128K | — |
| Max output | 32K | 16.384K | — |
Benchmark Comparison
| Benchmark | Claude Opus 4.6 | Grok 4 |
|---|---|---|
| MMLU-Pro | 89.5% | 86% |
| HumanEval | 95% | 93% |
| GPQA | 75.5% | 72% |
Capabilities
| Capability | Claude Opus 4.6 | Grok 4 |
|---|---|---|
| code | ✓ | ✓ |
| reasoning | ✓ | ✓ |
| text | ✓ | ✓ |
| tool-use | ✓ | ✓ |
| vision | ✓ | ✓ |
| web-search | ✗ | ✓ |
Claude Opus 4.6 Strengths
- ✓Best-in-class agentic tool use and coding
- ✓1M context available in beta (Tier 4)
- ✓Strong at following complex multi-step instructions
Claude Opus 4.6 Weaknesses
- ✗Premium pricing ($10/$37.50 at 1M context)
- ✗1M context beta is Tier 4 only
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: Grok 4 is the more affordable option at $3/$15 per 1M tokens.
Higher benchmarks: Claude Opus 4.6 scores higher on average across available benchmarks (86.7% avg).
Larger context: Claude Opus 4.6 supports 200K tokens.
Choose Grok 4 if cost matters most. Choose Claude Opus 4.6 if you need the best possible quality for complex tasks.