OpenAI's current Codex rate card now maps credit usage to input, cached-input, and output tokens instead of relying only on rough per-message estimates. The April 5, 2026 Hacker News thread focused on how that gives teams clearer cost visibility, while also leaving a split world where some plans use the new token-based card and others remain on the legacy message-based card until migration.
OpenAIDevs said on April 4, 2026 that developers can move from project setup to deployment with the Vercel plugin in the Codex app. The post aligns with OpenAI’s Codex plugin documentation and Vercel’s late-March rollout of plugin support for OpenAI Codex and Codex CLI.
OpenAI said on April 2, 2026 that ChatGPT Business and Enterprise teams can now add Codex-only seats with usage-based pricing instead of paying a fixed seat fee. OpenAI also cut annual ChatGPT Business pricing from $25 to $20 per seat and said Codex usage inside Business and Enterprise has grown 6x since January.
OpenAI said on March 31, 2026 that it closed a $122 billion funding round at an $852 billion post-money valuation. The company used the announcement to present consumer reach, enterprise growth, API usage, Codex adoption, and compute access as one reinforcing AI platform flywheel.
OpenAI Developers said recent Codex usage data suggests developers are handing off long-running work like refactors and architecture planning at the end of the day. In a follow-up reply, the account said tasks started at 11 pm are 60% more likely than other tasks to run for 3+ hours.
OpenAIDevs pointed developers to Codex Security on March 29, 2026, positioning it as a way to find, validate, and remediate likely vulnerabilities in connected GitHub repositories. OpenAI's docs say the system scans commit by commit, uses repo-specific threat models, validates high-signal findings in an isolated environment, and can move reviewed findings toward GitHub pull requests.
OpenAI Devs said on March 26, 2026 that plugins are rolling out in Codex, letting the agent work with common tools such as Slack, Figma, Notion, and Gmail. OpenAI's Codex docs describe plugins as reusable bundles that package skills, app integrations, and MCP server settings, turning Codex into a more shareable workflow layer for teams.
OpenAIDevs said on March 27, 2026 that Codex usage limits had been reset across plans so users could try newly launched plugins. OpenAI's Help Center says Codex is temporarily available on Free and Go, paid plans are getting 2x rate limits, and plugins package reusable workflows built from skills, app integrations, and MCP configurations.
OpenAI introduced the Codex app on February 2, 2026. The macOS desktop interface is built to supervise multiple agents in parallel, manage skills and automations, and was expanded to Windows on March 4, 2026.
OpenAI Developers announced on March 20, 2026 that verified university students in the United States and Canada can claim $100 in Codex credits. OpenAI’s support page says that equals 2,500 ChatGPT credits, requires student verification through SheerID, and expires 12 months after the grant date.
OpenAI said on March 5, 2026 that GPT-5.4 Thinking and GPT-5.4 Pro were rolling out in ChatGPT, while GPT-5.4 also became available in the API and Codex. OpenAI’s launch page positions GPT-5.4 as a unified frontier model for reasoning, coding, native computer use, and long-horizon agent workflows.
OpenAI published a March 19, 2026 overview of its internal coding-agent monitoring stack. The company is using model-powered oversight in real deployments and argues similar safeguards should become standard for internal agent use.