skip to content- 2026-07-02
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Fable 5 Returns as Claude Sonnet 5 Becomes Default
Fable 5 is back with tighter safeguards while Sonnet 5 becomes Claude's default. Here is the practical routing and cost decision.
- 2026-06-27
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Frontier Model Access: Fable, Mythos, GPT-5.6
Fable 5 is restored globally, while Mythos 5 and GPT-5.6 remain approval-sensitive. These are different access mechanisms, not one licensing regime.
- 2026-06-11
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Claude Fable 5 Restored: Cost and Guardrails
Fable 5 is generally available but credit-controlled. Compare its $10/$50 price, safeguards, retention, and Opus 5 alternative.
- 2026-02-03
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Claude vs OpenAI API Pricing: Opus 5.5 and GPT-6
September 2026 Claude and OpenAI API price anchors, with Opus 5.5, GPT-6 Sol and Luna, caching boundaries, and historical comparisons.
- 2026-01-30
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Premium LLM Comparison: Opus 5.5, GPT-6, Fable
Dated comparisons of Sonnet 5, Opus 5.5, GPT-6, Fable 5, and restricted models; current routing is linked separately from preserved prices and evidence.
