Observed · not hosted
GPT-4o
A signed record of the public facts about OpenAI's GPT-4o, as observed on 2026-06-25. LeanLogix does not host, train, or evaluate this model — this passport makes the cited facts tamper-evident, not a benchmark claim.
Signed public facts
DeveloperOpenAI
Parametersnot publicly disclosed
Base architecturesingle end-to-end multimodal network (internal architecture not publicly disclosed)
Context window128K tokens (16,384 max output)
Modalitymultimodal (API surface: text + image in → text out)
Released2024-05
Licenseproprietary (OpenAI API / commercial terms)
Observed byLeanLogix · 2026-06-25
Dispositionobserved — public facts only, no benchmark signed
The seal — Ed25519, re-checkable offline
Signed with the same key that signs our hosted model passports — one provenance authority across both tiers. Verify it here, or paste the receipt into the public verifier and re-derive the proof in your own browser.
Signing key fpa97122c37f5c…97fac1e1
Body sha256d73b0a96ab16…978c2754
Public-fact observation of a model LeanLogix does not host, train, or evaluate. No benchmark or quality claim is made or signed — only the cited public facts on the observed date. Signed with the LeanLogix provenance key so the record is tamper-evident and offline-verifiable.