Claude 3 Opus vs Grok-3: Specs & Benchmark Comparison
| Characteristic | Claude 3 Opus | Grok-3 |
|---|---|---|
| Company | Anthropic | xAI |
| Release Date | February 29, 2024 | February 16, 2025 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 200K | 128K |
| Context (output) | 200K | 8K |
| Input Price / 1M | $15.00 | $3.00 |
| Output Price / 1M | $75.00 | $15.00 |
| Average Score | 0.8 | 0.8 |
| Benchmarks | ||
| GPQA | 0.5 | 0.8 |
Visual Benchmark Comparison
Claude 3 Opus
Grok-3
GPQA0.5 vs 0.8
0.5
0.8
Verdict
Grok-3 leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude 3 Opus — 0.8, Grok-3 — 0.8.
API Cost
Grok-3 is 5.0x cheaper: input $3.00/1M vs $15.00/1M tokens.
Context Window
Claude 3 Opus supports a larger context: 200K vs 128K tokens.
Recency
Grok-3 is newer: released 2/16/2025 vs 2/29/2024.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — Claude 3 Opus or Grok-3?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude 3 Opus or Grok-3?
Grok-3 is cheaper for input: $3.00 per 1M tokens vs $15.00.
Which has a larger context window — Claude 3 Opus or Grok-3?
Claude 3 Opus supports a larger context: 200,000 tokens vs 128,000.
The Claude 3 Opus and Grok-3 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude 3 Opus or Grok-3 page. See also the complete list of AI model comparisons.