Is Claude Fable 5 a good deal?
Whether anything in this catalogue beats Claude Fable 5 on both quality and price, and what you give up if it does. A computation on the current catalogue, not an opinion.
13 undominated of 136 · Sep 23, 2026
As of Sep 23, 2026, Claude Fable 5 is dominated for Balanced on LMArena. Claude Fable 5.1 scores 15.0 higher at the same price, with a covering envelope. 13 of 136 rated, priced standard models are undominated.
Inspect model evidence Compare differences & requirements
Claude Fable 5.1 scores 15.0 points higher than Claude Fable 5 at the same price, $20.00 per million tokens for both.
LMArena Elo · higher is better
Scale starts at 1040 Elo
1492.6
Effective $/M · Balanced · lower is better
$20.00/M
LMArena Elo · higher is better
Scale starts at 1040 Elo
1507.6
Effective $/M · Balanced · lower is better
$20.00/M
Claude Fable 5 takes text, image, file, returns up to 128,000 tokens from a 1,000,000-token context, and is listed by 6 sellers.
Compared against 136 rated, priced models on this lens: 3 models dominate it and give up nothing, 1 more dominates it but gives something up. Claude Fable 5 scores 1492.6 at $20.00 per million tokens for this mix.
Envelope-safe replacements
Each row scores at least as high, costs no more, and covers this model’s context, output, modalities, tools, and reasoning. A cheaper narrower model is not listed here.
| Model | LMArena | Effective $/M | You save |
|---|---|---|---|
| Claude Fable 5.1 | 1507.6 +15.0 | $20.00/M | 0% |
| Claude Opus 5 | 1504.9 +12.3 | $10.00/M | 50% |
| Claude Opus 4.6 | 1503.0 +10.4 | $10.00/M | 50% |
Higher score, lower price, named losses
Not a drop-in. The loss is why these are not a recommendation.
| Model | LMArena | Effective $/M | You give up |
|---|---|---|---|
| Gemini 3.8 Flash | 1494.7 | $1.50/M | max output |
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