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Internal-to-public deployment gap at the frontier

Months between a frontier model's internal availability and its public release, from the one documented case (Anthropic's Mythos class: internal in February, public in June 2026, per Ryan Greenblatt on the Dwarkesh Podcast, with Fortune's release report for the public leg).

Reason through this

The reading

Four months, on one hedged podcast statement. Enough to publish, not enough to lean on.

Every readingeach dot links to its record
a readingnormal rangefast range
reported

1 reading drawn from dwarkesh.anthropic_mythos.internal_to_public_gap_months.pt, one of 2 series listed under How it is measured; 2 observations in the evidence.

Source: Dwarkesh Podcast transcripts. Dwarkesh Podcast.

The numbers
as ofreadingvaluerecord
2026-06-30anthropic mythos4 monthsreported

Why it matters

AI 2027 turns on labs keeping their best models internal. A gap that grows is the scenario's signature; a gap of months is ordinary product testing.

What cuts against it

A single datum from a third party speaking from memory; internal availability is not internal deployment at scale; restricted partner access blurs the public date.

How it is measured
  • series dwarkesh.anthropic_mythos.internal_to_public_gap_months.pt
  • series fortune.anthropic_mythos.public_release.pt
  • source Dwarkesh Podcast transcripts · default tier 6 · Substack; short quotation
  • source Fortune · default tier 5 · Fortune Media; short quotation
  • proxy model_release · cadence quarterly · valve invention to product

Normal = a gap under six months, ordinary red-teaming and productisation; fast = a year or more, a lab running internally on a model the public does not have. Between is `emerging`.

Applied to dwarkesh.anthropic_mythos.internal_to_public_gap_months.pt.

Latest readings
  • 2026-06-30 anthropic_mythos · 4 monthsas of 2026-06-30
Why this status, and its history

Evaluator: 4 (Dwarkesh Podcast transcripts, 2026-06-30) is inside the consistent band (hi=6). Auto-reason; band rationale: Normal = a gap under six months, ordinary red-teaming and productisation; fast = a year or more, a lab running internally on a model the public does not have. Between is `emerging`.

  1. 2026-09-10unmeasured to consistent with normalconf — → 45 · the evaluator (automatic)

    Evaluator: 4 (Dwarkesh Podcast transcripts, 2026-06-30) is inside the consistent band (hi=6). Auto-reason; band rationale: Normal = a gap under six months, ordinary red-teaming and productisation; fast = a year or more, a lab running internally on a model the public does not have. Between is `emerging`.

    source1
Why this confidence

Rests on 2 observations from Dwarkesh Podcast transcripts, Fortune; best evidence tier 5, grade B; current.

Confidence is independent of status: 90–95 multiple strong independent sources; 70–89 good evidence, some ambiguity; 50–69 mixed or hard to operationalise; 0–49 limited or vague evidence.

Predictions that lean on this