Observed Signal · Apr 9, 2026 · Product Launch · Source: CNBC Technology · Impact: 4/5 · Sentiment: Neutral
OpenAI Adds $100/month ChatGPT Pro Tier for Codex
OpenAI introduced a new $100/month ChatGPT Pro tier targeted at heavy Codex (coding) users, offering five times the Codex capacity of its $20 Plus plan. The company retained the $20 Plus plan (ad-free) and continues to offer a $200/month Pro tier (also ad-free) — the $200 tier is currently not listed on the pricing page but remains available and provides about 20× the Plus limits. Free and an $8/month Go plan (both ad-supported) remain available. OpenAI said the $100 tier will deliver temporarily higher Codex limits through May 31 as a promotional boost. The company framed the pricing move as a competitive response to Anthropic’s $100 Claude Code option. OpenAI reported Codex usage exceeding three million weekly users, up 5× in the past three months with ~70% month-over-month growth; prior reports also cite a Codex standalone Apple app and a reported run-rate revenue above $2.5 billion as of February.
OpenAI (a major platform) expanded paid Codex capacity with a new tier, intensifying competition with Anthropic and signaling significant revenue and usage growth in AI developer tooling that can affect enterprise adoption and pricing dynamics.
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Key Takeaways & Evidence Grounding
- OpenAI launched a $100/month ChatGPT Pro tier focused on Codex coding usage.
- The $100 Pro plan offers 5× the Codex capacity of the $20/month Plus plan.
- OpenAI’s existing pricing includes: free (ads), $8/month Go (ads), $20/month Plus (ad-free), and a $200/month Pro tier (ad-free); the $200 tier remains available but is not listed on the pricing page.
- The $200 plan offers roughly 20× the Plus limits; the $100 plan has temporarily higher Codex limits through May 31.
- OpenAI reported Codex has over 3 million weekly users (5× growth in three months, ~70% month-over-month growth).
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Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
OpenAI launches ChatGPT Pro to boost Codex usage
OpenAI introduced a new ChatGPT Pro subscription tier aimed at developers using its Codex coding agent. The offering includes a $100/month (≈€103) Pro plan and a $200/month Pro plan with significantly expanded Codex usage limits (5x and 20x versus ChatGPT Plus, respectively); OpenAI temporarily increases the $100 tier’s boost to 10x until May 31. The update follows Codex reaching three million weekly active users; CEO Sam Altman said usage limits will be reset at each additional million up to ten million. OpenAI recently released a Codex mobile app, the GPT-5.3‑Codex model, and the Frontier development platform. The Pro subscription provides access to GPT-5.4 Pro Reasoning, unlimited file uploads, GPT‑5.3 usage, individual GPTs, and experimental features. OpenAI is also testing a parallel workflow feature called Scratchpad. Thibault Sottiaux from the Codex team clarified rate-limit wording publicly on X.
OpenAI Adds Pay-As-You-Go Codex Seats for Teams
OpenAI announced that teams on ChatGPT Business and Enterprise can now add Codex-only seats to workspaces with pay-as-you-go pricing, billed by token consumption and without rate limits. The company also lowered ChatGPT Business annual pricing from $25 to $20 per seat. Eligible ChatGPT Business workspaces can receive promotional credits ($100 per new Codex-only team member, up to $500 per team) for a limited time. OpenAI highlighted accelerating Codex adoption—Codex users within ChatGPT Business and Enterprise have grown sixfold since January—and cited usage stats including over 9 million paying business ChatGPT users and more than 2 million weekly Codex builders. The Codex app, plugins and automations were promoted as recommended ways to get started.
OpenAI Codex Adds Sites and Role-Specific Plugins
On June 2, 2026 OpenAI updated Codex with finance-focused plugins that can turn the coding agent into an on‑demand public‑equity analyst and investment banker. The release is part of a broader Codex expansion that includes a Plugins ecosystem and feature set (Sites, Annotations, role‑specific plugins) previously described by OpenAI; Codex is reported to have scaled rapidly (millions of weekly users) and some extended functionality is gated behind paid ChatGPT tiers and enterprise plans. The Substack piece also notes Anthropic has confidentially filed for an IPO, framing the Codex finance push as a strategic move in the AI‑for‑finance race and arguing it could reorder which firms capture value from agentic financial workflows.
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