SmophyAI

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Real data comparison

Anthropic: Claude Fable 5.1 (batch) vs SpaceXAI: Grok 4.6

On quality, Anthropic: Claude Fable 5.1 (batch) leads (53.4 vs 44.4). On price, SpaceXAI: Grok 4.6 is cheaper ($3.00 vs $20.00 per 1M). In real production usage, SpaceXAI: Grok 4.6 is used more (rank #51 vs #60 of 325).

  • Anthropic: Claude Fable 5.1 (batch)
  • SpaceXAI: Grok 4.6
Quality (Intelligence Index)53.4 / 44.4
Price ($/1M blended)$20.00 / $3.00
Average usage share0.32% / 0.45%
Best provider uptime100.0% / 100.0%
Coding index81.6 / 76.8
Agentic index58 / 53.4
Context window1,000,000 / 500,000
Quality per dollar2.7 pts/$ / 14.8 pts/$

Usage share over time

0.82%0.61%0.41%0.20%0.00%Share of usageAug 13Aug 26Sep 8
  • Anthropic: Claude Fable 5.1 (batch)
  • SpaceXAI: Grok 4.6

Frequently asked questions

Anthropic: Claude Fable 5.1 (batch) vs SpaceXAI: Grok 4.6: which is better quality?

Anthropic: Claude Fable 5.1 (batch) scores higher on Artificial Analysis's Intelligence Index (53.4 vs 44.4).

Anthropic: Claude Fable 5.1 (batch) vs SpaceXAI: Grok 4.6: which is cheaper?

SpaceXAI: Grok 4.6 is cheaper at $3.00/1M vs $20.00/1M.

Anthropic: Claude Fable 5.1 (batch) vs SpaceXAI: Grok 4.6: which is used more?

SpaceXAI: Grok 4.6 has higher real OpenRouter usage share (rank #51 vs #60 of 325).

Source: OpenRouter (openrouter.ai/rankings), as of September 9, 2026.

Benchmark scores: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings).

Methodology: www.smophy.ai/benchmark/methodology

Token counts originate from each provider's own tokenizer and are not directly comparable across providers.