Claude Opus 4 vs Grok 3
Performance benchmarks + pricing comparison — updated April 2026
Claude Opus 4
AnthropicAnthropic's most powerful model. Best for complex reasoning and challenging coding tasks.
| Input | $15.00/M |
| Output | $75.00/M |
| Context | 200K tokens |
| Best For | Complex architecture decisions, debugging hard bugs, research |
| Benchmark | 86/100 |
Grok 3
xAIxAI's flagship model. Strong general-purpose capability with real-time knowledge access through X platform integration.
| Input | $3.00/M |
| Output | $15.00/M |
| Context | 128K tokens |
| Best For | General coding, research tasks, current-event-aware applications |
| Benchmark | 70/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | Claude Opus 4 | Grok 3 | Leader |
|---|---|---|---|
| Overall Score | 86 | 70 | Claude Opus 4 leads by 16pts |
| SWE-bench Verified | 84 | 64 | Claude Opus 4 leads by 20pts |
| LiveCodeBench | 88 | 72 | Claude Opus 4 leads by 16pts |
| HumanEval | 96 | 88 | Claude Opus 4 leads by 8pts |
| BigCodeBench | 76 | 56 | Claude Opus 4 leads by 20pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | Claude Opus 4 | Grok 3 | Savings |
|---|---|---|---|
| Small Script (1K lines) | $3.08 | $0.55 | Grok 3 saves $2.52 (82%) |
| Medium Feature (10K lines) | $23.29 | $4.05 | Grok 3 saves $19.24 (83%) |
| Large Project (50K lines) | $116.44 | $20.25 | Grok 3 saves $96.19 (83%) |
| Code Review (5K lines) | $6.02 | $0.90 | Grok 3 saves $5.12 (85%) |
Value Analysis (Price per Benchmark Score Point)
Lower is better — how much you pay for each point of benchmark performance.
| Model | Overall Score | Price per Score Point | Verdict |
|---|---|---|---|
| Claude Opus 4 | 86 | $0.174/pt | Higher cost per point |
| Grok 3 | 70 | $0.043/pt | Better value |
Grok 3 delivers the best value at $0.043 per score point.
Strengths & Weaknesses
Claude Opus 4
- + Best at complex reasoning
- + Strong system design
- + Excellent debugging
- - Expensive for bulk tasks
- - Slower response times
Grok 3
- + Strong reasoning
- + X integration
- - Newer model
- - Limited ecosystem
Verdict
Grok 3 is cheaper at $3.00/M, but Claude Opus 4 scores higher on benchmarks (86 vs 70).
Choose Grok 3 for cost-sensitive projects, Claude Opus 4 when performance matters most.
Compare with Other Models
Claude Sonnet 4
AnthropicAnthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.
Claude 3.5 Sonnet
AnthropicPrevious generation Sonnet. Still excellent for coding tasks at the same price point.
Claude 3.5 Haiku
AnthropicFast, cost-effective model for high-volume tasks. Great for code review and simple queries.
Claude 3 Opus
AnthropicFirst generation Opus. Highest reasoning capability in the Claude 3 family.
Claude 3 Sonnet
AnthropicFirst generation Sonnet. Balanced performance for general tasks.
Claude 3 Haiku
AnthropicCheapest Claude model. Fast responses for simple tasks and basic coding.