EXVIV evidence profile

OpenAI Codex

https://openai.com/codex/

Review verified moves first. Open the official source or before-and-after evidence when you need the full record.

Public proof receipts

The useful part, first.

These are delayed P0 and P1 receipts from the curated public set. Same-day coverage and the rest of the watchlist stay in a private workspace.

P1packagingOct 30, 2026

GPT-5.5 Rosalind Discovery and GPT-5.5 Rosalind Research are available only to select Enterprise plans.

BEFORE

GPT-Rosalind-Research is only available to select Enterprise plans. Read more.

AFTER

GPT-5.5 Rosalind Research

View evidence

GPT-5.5 Rosalind Discovery and GPT-5.5 Rosalind Research are available only to select Enterprise plans. GPT-6 Rosalind Research is available in Work and Codex to approved Business and Enterprise organizations with Research access.

WHY IT MAY MATTER

A packaging or usage-policy change can alter effective price, product eligibility, and customer comparisons.

Open public receipt → Current source ↗

P1packagingOct 29, 2026

Codex CLI 0.166.0 added GPT-6.1 Terra to the bundled, Vertex AI, and Amazon Bedrock model catalogs.

BEFORE

GPT-5.5 retirement in Codex

AFTER

Codex CLI 0.166.0

View evidence

Codex CLI 0.166.0 added GPT-6.1 Terra to the bundled, Vertex AI, and Amazon Bedrock model catalogs. Codex CLI 0.166.0 introduced keyboard-driven transcript selection, the codex queue --resume command, and codex doctor --network-only diagnostics.

WHY IT MAY MATTER

A new release or deprecation can change feature parity, migration risk, and the next competitive response.

Open public receipt → Current source ↗

P1packagingOct 29, 2026

Eligible ChatGPT subscriptions include an API credits benefit with specific monthly grants and billing terms.

BEFORE

Where automatic routing is available, Instant may switch to Medium for requests that need more reasoning; the message is billed at the applicable model rate above. Manually selecting Medium uses the selected model's Medium rate, whether or not automatic routing is available.

AFTER

In ChatGPT Business, where automatic routing is enabled, Instant may switch to Medium for requests that need more reasoning. The message uses the applicable model rate above. For availability and controls, see: ChatGPT Business models and limits.

View evidence

In ChatGPT Business, automatic routing may switch Instant to Medium for complex requests, and manually selecting Medium uses the selected model's Medium rate. Eligible ChatGPT subscriptions include an API credits benefit with specific monthly grants and billing terms.

WHY IT MAY MATTER

A packaging or usage-policy change can alter effective price, product eligibility, and customer comparisons.

Open public receipt → Current source ↗

Monitored sources