SmophyAI

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Real data comparison

Anthropic: Claude Fable 5.1 (batch) vs OpenAI: GPT-5.6 Sol (batch)

On quality, Anthropic: Claude Fable 5.1 (batch) leads (53.4 vs 47.1). On price, OpenAI: GPT-5.6 Sol (batch) is cheaper ($4.00 vs $20.00 per 1M). In real production usage, OpenAI: GPT-5.6 Sol (batch) is used more (rank #28 vs #60 of 325).

  • Anthropic: Claude Fable 5.1 (batch)
  • OpenAI: GPT-5.6 Sol (batch)
Quality (Intelligence Index)53.4 / 47.1
Price ($/1M blended)$20.00 / $4.00
Average usage share0.32% / 1.09%
Best provider uptime100.0% / 100.0%
Coding index81.6 / 77.4
Agentic index58 / 50.5
Context window1,000,000 / 1,050,000
Quality per dollar2.7 pts/$ / 11.8 pts/$

Usage share over time

2.42%1.81%1.21%0.60%0.00%Share of usageJul 10Aug 9Sep 8
  • Anthropic: Claude Fable 5.1 (batch)
  • OpenAI: GPT-5.6 Sol (batch)

Frequently asked questions

Anthropic: Claude Fable 5.1 (batch) vs OpenAI: GPT-5.6 Sol (batch): which is better quality?

Anthropic: Claude Fable 5.1 (batch) scores higher on Artificial Analysis's Intelligence Index (53.4 vs 47.1).

Anthropic: Claude Fable 5.1 (batch) vs OpenAI: GPT-5.6 Sol (batch): which is cheaper?

OpenAI: GPT-5.6 Sol (batch) is cheaper at $4.00/1M vs $20.00/1M.

Anthropic: Claude Fable 5.1 (batch) vs OpenAI: GPT-5.6 Sol (batch): which is used more?

OpenAI: GPT-5.6 Sol (batch) has higher real OpenRouter usage share (rank #28 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.