claude-fable-5 vs composer-2.5
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 | composer-2.5 | Advantage |
|---|---|---|---|
| Capability | 60% | 60% | Even |
| Median task time | 3m 5s | 3m 52s | 47s faster (claude-fable-5 leads) |
| Approx. task cost | $0.031 / task | $0.025 / task | $0.006 / task lower (composer-2.5 leads) |
claude-fable-5: 34.0% of Claude Max 20x (34.0% / 5h, 4.0% / 1w) per run. composer-2.5: 1.9% of Cursor Pro (1.9% / 1m) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | claude-fable-5 | composer-2.5 | Advantage |
|---|---|---|---|
| Capability | 85% | 52% | +33% (claude-fable-5 leads) |
| Median task time | 5m 11s | 4m 56s | 15s faster (composer-2.5 leads) |
| Approx. task cost | $0.038 / task | $0.025 / task | $0.013 / task lower (composer-2.5 leads) |
claude-fable-5: 2.8% of Claude Max 20x (2.8% / 5h, 0.6% / 1w) per good solve. composer-2.5: 0.1% of Cursor Pro (0.1% / 1m) 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 composer-2.5?
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 2026-08-10.
How much do claude-fable-5 and composer-2.5 cost?
claude-fable-5 runs on Claude Max 20x at $200/month (public price as of 2026-08-05). composer-2.5 runs on Cursor Pro at $20/month (public price as of 2026-07-20).