How do Claude Fable 5 and Grok 4.3 compare on coding benchmarks?

The comparison table shows SWE-bench, SWE-Pro, SWE-Atlas, Terminal-Bench, DeepSWE, and coding agent index scores for both Claude Fable 5 and Grok 4.3 when publicly disclosed.

LLM Comparison

Claude Fable 5 vs Grok 4.3: benchmark scores, pricing & comparison.

Q: Which is better: Claude Fable 5 or Grok 4.3?

AskClash compares Claude Fable 5 and Grok 4.3 side by side across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, and context window so you can see which model wins on each benchmark.

Side-by-side Claude Fable 5 vs Grok 4.3 comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.

Open live leaderboard Claude Fable 5 model page Grok 4.3 model page

Rank #2 vs #33AskClash overall scores 92.5 vs 43.6.

Pricing $10.0/$50.0 vs $1.25/$2.50Input and output token prices per 1M tokens when published.

Proprietary vs ProprietaryAnthropic vs xAI.

Claude Fable 5 vs Grok 4.3 benchmark comparison

Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.

Metric	Claude Fable 5	Grok 4.3
Overall Score	92.5	43.6
Leaderboard Rank	#2	#33
RWT	9.0	6.0
Coding Agent Index	77.2	—
HLE	64.5	35.0
GPQA	94.5	90.1
IFEval	80.3	81.3
SWE-bench	95.5	—
SWE-Pro	80.3	—
SWE-Atlas	83.3	—
Terminal-Bench	88.0	—
DeepSWE	69.7	—
OSWorld	85.0	—
Finance Agent	56.3	37.7
CharXiv	93.5	—
MMMU-Pro	92.7	78.1
Tau2	89.2	97.7
Input Price (per 1M tokens)	$10.0	$1.25
Output Price (per 1M tokens)	$50.0	$2.50
Context Window	1M+	1M
Benchmarks Published	17	6

Claude Fable 5 vs Grok 4.3 head-to-head charts

Claude Fable 5 leads 6 and Grok 4.3 leads 2 of 8 shared benchmarks. Grok 4.3 is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Claude Fable 5Grok 4.3

Overall

92.5Claude Fable 5

43.6Grok 4.3

RWT

9.0Claude Fable 5

6.0Grok 4.3

HLE

64.5Claude Fable 5

35.0Grok 4.3

GPQA

94.5Claude Fable 5

90.1Grok 4.3

IFEval

80.3Claude Fable 5

81.3Grok 4.3

Finance Agent

56.3Claude Fable 5

37.7Grok 4.3

MMMU-Pro

92.7Claude Fable 5

78.1Grok 4.3

Tau2

89.2Claude Fable 5

97.7Grok 4.3

Claude Fable 5

Input$10.0

Output$50.0

Workload$20

Context1M+

Grok 4.3

Input$1.25

Output$2.50

Workload$1.75

Context1M

Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.

More Claude Fable 5 and Grok 4.3 comparisons

Explore how Claude Fable 5 and Grok 4.3 stack up against other top-ranked LLMs.

Claude Opus 5 vs Claude Fable 5 Claude Opus 5 vs Grok 4.3 Claude Fable 5 vs GPT-5.6 Sol GPT-5.6 Sol vs Grok 4.3 Claude Fable 5 vs Claude Opus 4.8 Claude Opus 4.8 vs Grok 4.3 Claude Fable 5 vs Kimi K3 Kimi K3 vs Grok 4.3 Claude Fable 5 vs Claude Opus 4.7 Claude Opus 4.7 vs Grok 4.3

How to read this comparison

Benchmark scores

Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.

Token pricing

Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.

Coverage matters

Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.

This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.