Skip to content
SOLVENCY

Head to head

GPT-5.6 Sol vs Claude Fable 5

GPT-5.6 Sol: currentClaude Fable 5: currentheavy tier

Verdict · measured basis

GPT-5.6 Sol costs 1.8x less per solved task.

On output token price alone, GPT-5.6 Sol looks 1.7x cheaper (2.0x on input). The ranking holds, but the margin changes.

Source: Artificial Analysis (artificialanalysis.ai) · verified 2026-08-21 · prices from each provider's pricing page

Input $/M tokens

lower is better

  • GPT-5.6 Sol$5
  • Claude Fable 5$10

Output $/M tokens

lower is better

  • GPT-5.6 Sol$30
  • Claude Fable 5$50

Cost per solved task

measured basis · lower is better

  • GPT-5.6 Sol$9.88
  • Claude Fable 5$17.46
GPT-5.6 SolClaude Fable 5
Input $/Mtok$5$10
Output $/Mtok$30$50
Cached input $/Mtok$0.5$1
Pass rate65%67%
Pass rate sourceAAAA
Cost basismeasuredmeasured
Cost per solved task$9.88$17.46

verified 2026-08-21 · heavy task tier; measured rows ignore the tier· Methodology· GPT-5.6 Sol· Claude Fable 5