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Even after Sonnet 5 launched, the real story is that Fable 5 has remained banned for 18 days.

After Sonnet 5 shipped without an accompanying Fable 5 release, Theo and others noted that the more notable story was Fable 5's continued absence, quipping that it had been 18 days since Fable 5 was banned. ✦ AI generated

Theo · Latent Space · 2026-07-01 · original ↗

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Multiple reactions framed the absence of Fable 5 as the real story: "instead we got sonnet 5" (@kimmonismus) and "It's been 18 days since Fable 5 was banned" (@theo)

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✳ Fable 5 ✳ Sonnet 5

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Context · 1

Sonnet 5 offers top-tier coding and tool-use performance at Sonnet-level pricing, includes a 1-million-token context window, and is now the default model in Claude Code for Pro users across the Claude Platform, API, and Managed Agents.Anthropic (@ClaudeDevs) · Latent Space · conf 65%

Extends · 1

GLM-5.2's diffusion while Claude Fable remains export-banned deals a severe economic blow to frontier labs, letting open models erode the lower-margin business those labs need while they push into higher-margin frontier domains.Nathan Lambert · Interconnects · conf 60%

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gives example → Sonnet 5 could launch as the widely accessible but weaker companion model, while a stronger Fable 5 stays gated behind more restrictive, regionally limited access, especially in Europe.kimmonismus · Latent Space provides context → GLM-5.2's diffusion while Claude Fable remains export-banned deals a severe economic blow to frontier labs, letting open models erode the lower-margin business those labs need while they push into higher-margin frontier domains.Nathan Lambert · Interconnects