artificialwatch

← comparisons · head to head

Grok 4.6 vs Claude Fable 5

Claude Fable 5 scores higher than Grok 4.6 on all 5 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 60 and Claude Fable 5 at 85.1 (out of 100).

Scores as published by each board; table composed September 25, 2026.

Get the next launch alert, free →

Leaderboard by leaderboard

BoardGrok 4.6Claude Fable 5Higher
LMArena
Elo (community votes)
1,624.21,626.8Claude Fable 5
LiveBench
global average (0-100)
7883Claude Fable 5
SimpleBench
AVG@5 % (private set)
75.981.9Claude Fable 5
Vals AI
Vals Index accuracy % · weighted finance + coding tasks
59.266Claude Fable 5
Artificial Analysis
intelligence index · measured runs only
44.349.6Claude Fable 5

Raw scores are each board's own scale, so compare within a row, not across rows. Full table: the bench index.

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.

Full Grok 4.6 tracker →

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.

Full Claude Fable 5 tracker →

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 5 public leaderboards that rate both. Claude Fable 5's widest lead is on LiveBench. On the ArtificialWatch Index, which takes the median of each model's percentile across the boards that score it, Grok 4.6 is at 60 and Claude Fable 5 at 85.1 (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 2026-09-25.

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.

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 September 25, 2026). Boards measure different things, so raw scores are only comparable within a row.

More comparisons

GPT-6 Astra vs Claude Fable 5.1GPT-6 Astra vs GPT-5.6GPT-6 Astra vs Claude Opus 5Claude Fable 5.1 vs Claude Fable 5Claude Fable 5.1 vs Claude Opus 5Claude Opus 5 vs GPT-5.6Claude Opus 5 vs Claude Opus 4.8Claude Opus 5 vs Claude Fable 5Claude Opus 5 vs Kimi K3Kimi K3 vs Claude Fable 5Kimi K3 vs GLM-5.2Kimi K3 vs GPT-5.6DeepSeek V4 Pro vs GLM-5.2DeepSeek V4 Pro vs Kimi K3Grok 4.7 vs GPT-6 AstraGrok 4.7 vs Claude Opus 5Grok 4.7 vs Claude Fable 5.1Qwen 3.8 Max vs Claude Opus 5Qwen 3.8 Max vs Claude Fable 5Qwen 3.8 Max vs Kimi K3Qwen 3.8 Max vs DeepSeek V4 ProQwen 3.8 Max vs GLM-5.2Qwen 3.8 Max vs GPT-5.6GPT-6 Astra vs Claude Fable 5Claude Fable 5 vs Claude Opus 4.8Claude Fable 5 vs Claude Sonnet 5Claude Sonnet 5 vs Claude Opus 4.8Claude Sonnet 5 vs Claude Opus 5GLM-5.2 vs Claude Opus 4.8GLM-5.2 vs Claude Fable 5GLM-5.2 vs GPT-5.5Gemini 3.5 Flash vs Gemini 3.1 ProGemini 3.5 Flash vs Claude Sonnet 5GPT-6 Astra vs Claude Opus 4.8Claude Fable 5.1 vs Claude Opus 4.8Kimi K3 vs Claude Opus 4.8DeepSeek V4 Pro vs Claude Opus 4.8DeepSeek V4 Pro vs GPT-5.5DeepSeek V4 Pro vs Claude Fable 5GLM-5.3 vs Kimi K3GLM-5.3 vs GLM-5.2GLM-5.3 vs GPT-6 AstraGrok 4.6 vs Claude Opus 5Grok 4.6 vs GPT-5.6Grok 4.6 vs Grok 4.5Grok 4.6 vs Claude Sonnet 5Gemini 3.8 Flash vs Gemini 3.1 ProGemini 3.8 Flash vs Claude Opus 5Muse Spark 1.3 vs Gemini 3.8 FlashMuse Spark 1.3 vs GLM-5.3GPT-6 Sol vs GPT-6 AstraGPT-6 Sol vs Claude Opus 5GPT-6 Sol vs Claude Fable 5GPT-6 Luna vs GPT-6 AstraGPT-6 Sol vs GPT-6 LunaClaude Fable 5 vs GPT-5.6Claude Opus 4.8 vs GPT-5.5GPT-5.6 vs Claude Opus 4.8GPT-5.6 vs Claude Sonnet 5Claude Sonnet 5 vs GPT-5.5Claude Fable 5 vs GPT-5.5DeepSeek V4 Pro vs Claude Opus 5Qwen 3.8 Max vs GLM-5.3Qwen 3.8 Max vs Claude Opus 4.8GLM-5.3 Flash vs GLM-5.3GLM-5.3 Flash vs GLM-5.2MiniMax M3 vs Kimi K3MiniMax M3 vs DeepSeek V4 ProMiniMax M3 vs GLM-5.2MiniMax M3 vs GPT-5.5
sweeping every 60 seconds

Hear the minute the next one drops. Free.

A free Chrome push the moment a new model answers on a public API, an email about 15 minutes later. Texts or a phone call on paid plans.

  • Free forever
  • No card
  • Unsubscribe in one click

Also: the bench index · API pricing · the wire