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OpenAI makes Codex auto-review free, ships Decisions API in 28-day sprint

OpenAI makes Codex auto-review free, ships Decisions API in 28-day sprint

New Capabilities

Four Day 2 releases: free auto-review, three API tiers, a macOS meeting note-taker, and a public-beta decisions API—plus a community-voted usage reset.

Yesterday: Day 2 ships four workflow updates

Overview

Updated Yesterday

OpenAI made Codex's auto-review free for anyone signed in with a ChatGPT account on October 7, day two of a 28-day product sprint. The same day it cut its API pricing tiers from five to three, launched a Meetings note-taking plugin for macOS, and put the Decisions API into public beta.

The releases share a purpose: making long-running AI agents cheaper to supervise. Auto-review previously burned 2 to 10 percent of a user's plan allowance, yet approves roughly 99 percent of actions it checks. The Decisions API, powered by GPT-6 Luna, returns yes/no, choice, and score judgments up to 10 times faster than the standard API at $0.10 per million input tokens.

Why it matters

Free auto-review and a decisions API that is 10x faster cut the cost of supervising AI agents—the core economics of building autonomous systems.

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Key Indicators

3
API usage tiers after simplification
Paid tiers cut from five to three: Build, Launch, Grow.
$500
Top-tier API credit threshold
Cumulative credit purchases needed for the Grow tier, down from $1,000.
99%
Share of actions auto-review approves
The second-agent review stops for human approval about 200x less often than manual mode.
10x
Decisions API speedup vs Responses API
OpenAI's DevDay demo measured 150 milliseconds against 1.6 seconds.

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People Involved

Organizations Involved

Timeline

April 2026 October 2026

6 events Latest: Yesterday
Tap a bar to jump to that date
  1. Day 2 ships four workflow updates

    Latest Product

    Auto-review goes free; API tiers simplify; Meetings beta; Decisions API enters public beta.

  2. Community votes for full usage reset

    Community

    Roughly 74% vote for a reset; OpenAI processes it while keeping the Day 2 features.

  3. Sprint Day 1 promises faster speeds

    Product

    OpenAI promises roughly 50% faster default speed through subscriptions, opening the 28-day campaign.

  4. Decisions API previewed at DevDay

    Announcement

    OpenAI previews the GPT-6 Luna-powered Decisions API, demonstrating judgments 10x faster than the Responses API.

  5. First Decisions API prototype built

    Development

    Engineer Steven Heidel builds the first Decisions API prototype; public launch follows two weeks later.

  6. Ships auto-review for Codex

    Product

    OpenAI introduces second-agent approval for risky Codex actions, stopping for human checks far less often.

Scenarios

1

Auto-review becomes the default approval mode

Possible Resolves by Nov 30, 2026

Discussed by: OpenAI Developer Community commenters and AI Industry Today's sprint coverage

Auto-review currently requires opting in via settings. If it stays free and the sprint keeps shipping reliability improvements, OpenAI could enable it by default for all ChatGPT-signed-in users, making manual human approval the exception for routine Codex actions.

2

Usage resets stop after the 28-day sprint

Likely Resolves by Nov 15, 2026

Discussed by: AI Industry Today, which observed that compute access is becoming part of the product experience

The remaining weeks of the sprint pair daily releases with occasional full resets of Codex and ChatGPT Work usage windows. Once the 28 days end in early November, resets likely stop; the question is whether OpenAI converts the goodwill into a standing policy or ends the program quietly.

3

Decisions API reaches general availability

Likely Resolves by End of 2026

Discussed by: The Decoder and OpenAI's own DevDay statement that general availability is coming soon

OpenAI previewed the Decisions API on September 29 and entered public beta on October 7, with general availability promised. If GA arrives without retracting the 10x speed claim or raising the $0.10-per-million-input-token price, the API becomes a fast, cheap primitive for routing and agent tool selection.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

December 2024

GitHub makes Copilot free for VS Code users (December 2024)

GitHub let anyone using VS Code run Copilot code suggestions without a paid plan, capping free messages per month. The change removed the cost barrier to trying the assistant.

Then

Copilot's install base expanded as developers tested it without a subscription.

Now

It set the pattern of free developer-AI tiers used to drive adoption ahead of revenue.

Why this matters now

OpenAI's free auto-review follows the same playbook: removing a usage cost to grow agent-tool adoption.

November 2022

OpenAI launches ChatGPT to the public (November 2022)

OpenAI released ChatGPT as a free research preview on November 30, 2022, adding a website where anyone could chat with GPT-3.5. It reached one million users in five days, faster than any prior OpenAI product.

Then

ChatGPT became OpenAI's flagship consumer product; usage caps and premium tiers followed within months.

Now

It turned OpenAI from an API-first lab into a consumer platform and triggered the broader generative-AI boom.

Why this matters now

The Meetings plugin and ChatGPT Space extend agent context into that consumer workspace, the next step in the same expansion.

Sources

(8)