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Kimi K3 vs Claude Fable 5
Of the 6 public leaderboards that rate both, Kimi K3 scores higher on 1 and Claude Fable 5 on 5. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Kimi K3 is at 60.4 and Claude Fable 5 at 81.4 (out of 100).
Scores as published by each board; table composed September 24, 2026.
Leaderboard by leaderboard
| Board | Kimi K3 | Claude Fable 5 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,659.6 | 1,626.8 | Kimi K3 |
| LiveBench global average (0-100) | 79.2 | 83 | Claude Fable 5 |
| SimpleBench AVG@5 % (private set) | 60.7 | 81.9 | Claude Fable 5 |
| LLM Stats LLM Stats Score · composite (0-100), their rendered top 15 | 52.5 | 54 | Claude Fable 5 |
| Vals AI Vals Index accuracy % · weighted finance + coding tasks | 57.8 | 66 | Claude Fable 5 |
| Artificial Analysis intelligence index · measured runs only | 43.6 | 49.6 | Claude Fable 5 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
Kimi K3 at a glance
- Developer
- Moonshot
- Status
- Live since July 15, 2026
Live — dropped Jul 15 · 2.8T · open weights landed Jul 28 (1.56 TB, MXFP4).
Kimi K3, day one: impressive, expensive, and a little slow
2026-07-16 · Kimi K3 has been live for a day, and the picture forming is more interesting than the launch-night hype. Here's everything we're seeing so far.
Claude Fable 5 at a glance
- Developer
- Anthropic
- Status
- Live since July 1, 2026
Returned Jul 1.
Kimi K3 vs Claude Fable 5: quick answers
Which is better, Kimi K3 or Claude Fable 5?
It depends on what you measure. Of the 6 public leaderboards that rate both, Kimi K3 scores higher on 1 and Claude Fable 5 on 5. Kimi K3's widest lead is on LMArena; Claude Fable 5's widest lead is on SimpleBench. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Kimi K3 is at 60.4 and Claude Fable 5 at 81.4 (out of 100).
Which is newer, Kimi K3 or Claude Fable 5?
Kimi K3. It went live on July 15, 2026, 14 days after Claude Fable 5 (July 1, 2026).
Who makes Kimi K3 and Claude Fable 5?
Kimi K3 is from Moonshot; Claude Fable 5 is from Anthropic.
Where do these numbers come from?
Each score is the leaderboard's own published figure, read by ArtificialWatch (table composed September 24, 2026). Boards measure different things, so raw scores are only comparable within a row.
More comparisons
Watch free: Chrome push the moment a new model answers on a public API, an email about 15 minutes later. Also: the bench index · the wire