claude-fable-5 vs grok-4.6
Each agent graded on the same private suites, running headless through its own tools. Advantages are oriented so a win is a win, whichever way the metric runs.
| Dimension | claude-fable-5 | grok-4.6 | Advantage |
|---|---|---|---|
| Capability | 60% | 60% | Even |
| Median task time | 3m 12s | 6m 19s | 3m 6s faster (claude-fable-5 leads) |
| Approx. task cost | $0.031 / task | $0.013 / task | $0.018 / task lower (grok-4.6 leads) |
claude-fable-5: 34.0% of Claude Max 20x (34.0% / 5h, 5.0% / 1w) per run. grok-4.6: 2.8% of SuperGrok (2.8% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | claude-fable-5 | grok-4.6 | Advantage |
|---|---|---|---|
| Capability | 64% | 60% | +5% (claude-fable-5 leads) |
| Median task time | 5m 54s | 32m 10s | 26m 16s faster (claude-fable-5 leads) |
| Approx. task cost | $0.041 / task | $0.093 / task | $0.052 / task lower (claude-fable-5 leads) |
claude-fable-5: 12.0% of Claude Max 20x (12.0% / 5h, 1.0% / 1w) per run. grok-4.6: 5.4% of SuperGrok (5.4% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | claude-fable-5 | grok-4.6 | Advantage |
|---|---|---|---|
| Capability | 69% | 46% | +23% (claude-fable-5 leads) |
| Median task time | 5m 25s | 8m 23s | 2m 57s faster (claude-fable-5 leads) |
| Approx. task cost | $0.038 / task | $0.012 / task | $0.027 / task lower (grok-4.6 leads) |
claude-fable-5: 2.8% of Claude Max 20x (2.8% / 5h, 0.6% / 1w) per good solve. grok-4.6: 0.2% of SuperGrok (0.2% / 1w) per good solve. Each figure is a share of that agent's own plan, so there is no delta to draw.
Grades and deltas are comparable only within a suite version. See methodology.
Frequently asked questions
Which is better for coding, claude-fable-5 or grok-4.6?
They are even on our ladder: both clear tier 4 of 5 at 60% capability on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-17.
How much do claude-fable-5 and grok-4.6 cost?
claude-fable-5 runs on Claude Max 20x at $200/month (public price as of 2026-08-05). grok-4.6 runs on SuperGrok at $30/month (public price as of 2026-07-20).