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Claude Opus 5.5 vs Grok 4.3
List-price comparison ·Claude Opus 5.5 details ·Grok 4.3 details
For a typical workload (100,000 requests / mo), Grok 4.3 is the cheapest — 80% less than the priciest here ($250.00/mo vs $1,280.00/mo).
| Claude Opus 5.5 | Grok 4.3 | |
|---|---|---|
| Input / 1M tokens | $4.00 | $1.25 |
| Output / 1M tokens | $20.00 | $2.50 |
| Typical request (1,200 in + 400 out) | $0.0128 | $0.0025 |
| Context window | 1M tokens | 1M tokens |
| Max output | 128k tokens | 900k tokens |
| Quality score | 96/100 | 86/100 |
| Tier | Flagship | Flagship |
| Provider | Anthropic | xAI |
Projected monthly cost
| Requests / mo | Claude Opus 5.5 | Grok 4.3 |
|---|---|---|
| 1,000 | $12.80 | $2.50 |
| 10,000 | $128.00 | $25.00 |
| 100,000 | $1,280.00 | $250.00 |
More comparisons
Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.