Anthropic said it will begin restoring user access to Claude Fable 5 on Wednesday, July 2, 2026, after the U.S. Commerce Department lifted export controls that had blocked the model for roughly three weeks.
June 30, 2026 · Anthropic
Export Controls Lifted on Claude Fable 5 & Mythos 5 — Access Returns July 1
After a U.S. Commerce directive abruptly disabled both frontier models for all customers on June 12, Anthropic says the controls have now been removed and restoration will begin Wednesday.
June 12
Access disabled for all users under export directive
3 days
From June 9 launch to suspension
July 1
Restoration of access begins
Timeline of the first frontier-model export action
Considered the first case where export controls were actually applied to a frontier-class model.
Jun 9
Fable 5 & Mythos 5 released
Jun 12
Access suspended for all under U.S. directive
Jun 30
Commerce lifts the controls
Jul 1
Access restoration begins
Coding benchmark: SWE-Bench Pro
Fable 5 vs prior Opus 4.8 — same metric, resolved rate (%).
$10 / $50
input / output per 1M tokens
90%
prompt-caching input discount
What's praised
Long-horizon coding & agent work compressed "months to days"
Migrated a 50M-line Ruby codebase in a single day
Top scores on FrontierCode & Hebbia Finance Benchmark
What's questioned
Conservative guardrails fall back to a lower model on harmless queries
High price (input ~2× Opus 4.8) and unstable access
Usage-limit resets and frustration during the outage
Two model classes
Fable 5 — the public-facing frontier model with strengthened safeguards. Mythos 5 — the same base with guardrails removed, offered only to Glasswing partners, trusted cyber defenders aligned with the U.S. government. Misuse concerns in cybersecurity and biology drove the unusual mid-launch suspension.
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