| Claude Fable 5.1 | Gemma 4 31B | |
|---|---|---|
| Input, per 1M tokens | $10.00 | $0.09 |
| Output, per 1M tokens | $50.00 | $0.34 |
| Context window | 1M | 262K |
| Classification or routing (600 tokens in, 10 out), per 1,000 | $6.50 | $0.0574 |
| Chat reply (2,000 in, 400 out), per 1,000 | $40.00 | $0.316 |
| Retrieval-augmented answer (8,000 in, 500 out), per 1,000 | $105 | $0.89 |
| Confidence signal | no | yes |
| Tool calling | yes | yes |
| BANKING77, correct of 400 | not measured | 304 |
Which one should carry your traffic?
If Gemma 4 31B answers your requests as well as Claude Fable 5.1, moving that traffic saves 99% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Gemma 4 31B exposes a confidence signal, so Gimbix can let it answer first and hand unsure cases to Claude Fable 5.1.
Claude Fable 5.1 profile · Gemma 4 31B profile · Measure it on your traffic