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Grok 4.6 vs Claude Fable 5
Claude Fable 5 scores higher than Grok 4.6 on all 3 public leaderboards that rate both. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Grok 4.6 is at 52.6 and Claude Fable 5 at 69.9 (out of 100). On each maker's API, Grok 4.6 costs $2 / $6 per 1M tokens (input / output) and Claude Fable 5 $10 / $50.
Scores as published by each board; table composed November 10, 2026.
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Leaderboard by leaderboard
| Board | Grok 4.6 | Claude Fable 5 | Higher |
|---|---|---|---|
| LMArena Elo (community votes) | 1,617.8 | 1,625.2 | Claude Fable 5 |
| SimpleBench AVG@5 % (private set) | 75.9 | 81.9 | Claude Fable 5 |
| Epoch AI Epoch Capabilities Index (ECI) · many benchmarks on one scale | 157.9 | 164.3 | Claude Fable 5 |
Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.
For coding
On the ArtificialWatch coding index, Grok 4.6 is at 34.7 (#32 of 47) and Claude Fable 5 at 88.8 (#4). Claude Fable 5 scores higher on both coding boards that rate them.
| Coding board | Grok 4.6 | Claude Fable 5 |
|---|---|---|
| LMArena · Coding | 1,463.8 | 1,518.6 |
| Vals Vibe Code Bench | 76.2 | 90.4 |
Grok 4.6 at a glance
- Developer
- xAI
- Status
- Live since August 12, 2026
- API price
- $2 input / $6 output per 1M tokens · xAI, grok-4.6
- Context window
- 500K tokens
Live — Aug 12 at $2/$6 per 1M, unchanged from Grok 4.5.
Claude Fable 5 at a glance
- Developer
- Anthropic
- Status
- Live since July 1, 2026
- API price
- $10 input / $50 output per 1M tokens · Anthropic, claude-fable-5
- Context window
- 1M tokens
Returned Jul 1.
Grok 4.6 vs Claude Fable 5: quick answers
Which is better, Grok 4.6 or Claude Fable 5?
It depends on what you measure. Claude Fable 5 scores higher than Grok 4.6 on all 3 public leaderboards that rate both. Claude Fable 5's widest lead is on Epoch AI. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Grok 4.6 is at 52.6 and Claude Fable 5 at 69.9 (out of 100).
Which is newer, Grok 4.6 or Claude Fable 5?
Grok 4.6. It went live on August 12, 2026, 42 days after Claude Fable 5 (July 1, 2026).
Which is cheaper, Grok 4.6 or Claude Fable 5?
Grok 4.6 is cheaper on both input and output. On each vendor's own API, Grok 4.6 is $2 input / $6 output per million tokens and Claude Fable 5 is $10 input / $50 output per million tokens. Grok 4.6's rate rises for prompts over 200K tokens. Prices as published in the models.dev catalog, as of 2026-11-10.
Which has the bigger context window, Grok 4.6 or Claude Fable 5?
Claude Fable 5, at 1M tokens against Grok 4.6's 500K, as each vendor lists it.
How do Grok 4.6 and Claude Fable 5 compare for coding?
On the ArtificialWatch coding index, Grok 4.6 is at 34.7 (#32 of 47) and Claude Fable 5 at 88.8 (#4). Claude Fable 5 scores higher on both coding boards that rate them.
Who makes Grok 4.6 and Claude Fable 5?
Grok 4.6 is from xAI; 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 November 10, 2026). Boards measure different things, so raw scores are only comparable within a row.
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Also: the bench index · API pricing · what a workload costs on each · the wire