On May 13, 2026, OpenAI flipped its ChatGPT Codex pricing model. The company’s official pricing page listed a new free tier with daily message caps. Previously, Codex sat inside ChatGPT paid plans starting at $20 per month. Now anyone with a free OpenAI account got access to the coding agent. The change arrived after weeks of leaks and a public push from developers. OpenAI confirmed the free tier at OpenAI. The move ended a long period where Codex was a paid differentiator for ChatGPT Plus and Pro.
The free tier hit millions of users. Hobbyists, students, and small teams gained the most. But limits were real. OpenAI set the monthly completions cap at 1,000 and daily agent messages at 50. Heavy users still needed Plus or Pro. The competitive context was obvious. GitHub Copilot had already moved to usage-based billing in June 2026, as covered in GitHub Copilot usage-based billing. Google slashed Gemini prices. OpenAI had to respond. This move put Codex in front of every ChatGPT user, not just subscribers.
Why it mattered beyond pricing. Codex free tier changed the economics of AI coding. Independent data from Stanford HAI showed coding assistants were the fastest-growing enterprise AI use in 2025. A free OpenAI option pressured rivals Cursor, Windsurf, and Zed. Those tools already had free tiers, but OpenAI’s brand changed default choices. For users, the new free tier meant no credit card, no trial clock, and no hidden setup fees. The catch was the quota. We explain exactly what every user received and what still required payment.
The timing was deliberate. OpenAI announced the free tier one week after Google cut Gemini API prices and two weeks before GitHub Copilot’s usage-based billing went live. The AI price war forced every major vendor to attract developers before they locked into a rival. ChatGPT Codex free was not a charity move. It was a land grab. Free users generated training signals and enterprise upsells. The real question for developers was whether 50 messages per day could handle real work.
How Do the Top Options Compare?
| Plan | Monthly price | Daily Codex messages | Active coding agents | Monthly completions |
|---|---|---|---|---|
| Free ChatGPT Codex | $0 | 50 | 3 | 1,000 |
| ChatGPT Plus Codex | $20 | 200 | 5 | 5,000 |
| ChatGPT Pro Codex | $200 | 1,000 | 20 | 50,000 |
| ChatGPT Team Codex | $25 per user | 300 pooled per user | 10 per user | 10,000 pooled per user |
Data collected from OpenAI pricing page on May 13, 2026. Limits may change quarterly. Free AI News may earn a commission if you sign up for a paid plan through links on this site. This does not affect our reporting.
1. Free ChatGPT Codex , Best for hobbyists and students
OpenAI announced the free Codex tier on May 13, 2026. The official OpenAI pricing page listed no credit card requirement. Free users got 50 agentic coding messages per day. They also received 1,000 terminal completions each month. Three active coding agents could run at once. The context window was set at 128,000 tokens. This was the same base model previously locked behind ChatGPT Plus. The move was not a trial. OpenAI confirmed the free tier had no expiry date. But the daily reset meant users hit walls fast. A single debugging session could consume 20 messages. Students building small projects found the limits acceptable. Full-time developers did not. The free tier lacked priority compute. During peak hours, requests queued behind paid users. OpenAI also removed the voice input feature from the free Codex tier. The company said it would revisit limits every quarter. Users who needed more could upgrade. The free tier still included web search and file upload in the coding canvas. This mirrored the agentic coding push reported in ChatGPT Codex free tier changes. For many, the biggest win was access to Codex CLI. The CLI was already open source on GitHub. Free users could run local coding agents without the web app. However, API calls from the CLI still counted against the same monthly completions. The free tier did not include API access. That remained a separate paid product. Overall, the free tier was a real product, not a demo. It forced a rethink of paid AI coding tools. But the quotas were tight enough to push serious users toward subscriptions.
Key strengths:
- ✅ No credit card required
- ✅ 50 daily agent messages
- ✅ Three active coding agents
- ✅ 1,000 monthly completions
- ✅ Access to open source Codex CLI
- ❌ Daily messages reset quickly
- ❌ No priority compute
- ❌ No API access
Who it’s for: Choose the free tier if you are a student or hobbyist testing AI coding without monthly costs.
2. ChatGPT Plus Codex , Best for freelance developers
The $20 per month ChatGPT Plus plan kept Codex but raised every limit. Paying users received 200 daily Codex messages, 5 active coding agents, and 5,000 monthly completions. The context window stayed at 128,000 tokens. The real upgrade was priority compute. At peak hours, Plus requests jumped the queue. This mattered for developers who coded in the evening after a day job. The free tier could stall for 30 seconds during a heavy load. Plus rarely waited more than a few seconds. The plan also included the voice input feature that free users lost. Freelancers could talk through a bug while typing. Compared to the old Codex add-on, Plus was cheaper than the standalone $20 developer subscription OpenAI had tested in late 2025. But the new limits were still not unlimited. A busy week could exhaust 5,000 completions by Thursday. OpenAI’s pricing page now showed a progress bar for Codex usage. This removed the surprise of a mid-month cutoff. The AI subscription tiers compared showed that Codex Plus still undercut Anthropic’s Claude Code plan by $10. The free tier made Plus look better, not worse. Developers who crossed 1,000 completions every month saw the upgrade as mandatory. OpenAI bet that the free tier would convert 10 to 15 percent of users to Plus within two quarters. That conversion rate would more than offset the lost standalone Codex revenue.
Key strengths:
- ✅ 200 daily Codex messages
- ✅ 5 active coding agents
- ✅ Priority compute at peak hours
- ✅ Voice input included
- ✅ 5,000 monthly completions
- ❌ Still has monthly completion cap
- ❌ No API credits included
- ❌ Cost adds up for freelancers
Who it’s for: Choose ChatGPT Plus if you need a higher daily message limit and priority access for client work.
3. ChatGPT Pro Codex , Best for professional developers and small teams
ChatGPT Pro cost $200 per month and became the no-compromise Codex plan. The daily message limit jumped to 1,000. Active coding agents went from 5 to 20. Monthly completions reached 50,000. The context window expanded to 256,000 tokens for Pro users. That let developers feed an entire medium-sized repository into one session. Pro also included a dedicated Codex queue. No other plan shared that priority lane. OpenAI reported that Pro users saw 40 percent lower latency than free users in internal tests. The company did not publish the raw numbers. The plan made sense for a specific group: developers who ran Codex all day. A full workday of agentic coding could easily hit 600 messages. Pro handled that with room to spare. It also removed the commercial usage guardrails that Plus still had. Pro users could use Codex output in client projects without attribution. That clause had been a sore point for agencies. The AI price war consumer benefit developer impact showed that $200 was high, but cheaper than paying three Plus seats for a solo consultant. The free tier made Pro look extreme. It was. OpenAI positioned Pro as the power tool, while free and Plus served the majority. Developers who tried Pro rarely went back to Plus. The daily limit and priority queue were the reasons.
Key strengths:
- ✅ 1,000 daily Codex messages
- ✅ 20 active coding agents
- ✅ 50,000 monthly completions
- ✅ 256,000 token context window
- ✅ Dedicated low-latency queue
- ❌ Expensive at $200 per month
- ❌ Overkill for light coding
- ❌ No API credits included
Who it’s for: Choose ChatGPT Pro if you run Codex all day and need the largest limits and lowest latency.
4. ChatGPT Team Codex , Best for small businesses
ChatGPT Team cost $25 per user per month and targeted small businesses. The Codex limits were pooled. Each user got 300 daily messages and 10 active coding agents. Monthly completions pooled at 10,000 per user across the team. That meant a 5-person team had 50,000 completions to share. Unused completions rolled over for one month. The admin console let managers set per-user caps and view usage reports. This was missing from consumer Plus and Pro plans. Team also included shared coding canvas links. One developer could send a live debugging session to a teammate. The free Codex tier did not include any admin tools. For a small agency with three developers, Team at $75 total replaced three Plus seats at $60. The extra $15 bought reporting and rollover. That was a fair trade. The AI coding tools pricing impact noted that many startups moved from individual Plus plans to Team after the Codex free launch. The reason was the rollover. Individual plans reset monthly. Team let a quiet month build a buffer for a busy one. The free tier’s 1,000 completions reset to zero each month. No rollover. That created a hard choice: upgrade or lose unused work. OpenAI likely knew this. The free tier was generous enough to attract, but not generous enough to keep a team running for long.
Key strengths:
- ✅ Pooled monthly completions
- ✅ One month rollover
- ✅ Admin usage reports
- ✅ Shared coding sessions
- ✅ $25 per user per month
- ❌ Minimum 2 users required
- ❌ Daily message limit still per user
- ❌ No seat-transfer option
Who it’s for: Choose ChatGPT Team if your business needs pooled limits, rollover, and admin controls.
5. GitHub Copilot Free , Best alternative for GitHub-centric developers
GitHub Copilot Free was the closest rival to the new free Codex tier. Copilot Free had existed before May 13, 2026, but its limits were murkier. GitHub offered 2,000 code completions per month and 50 chat messages. That changed in June 2026 when GitHub moved to usage-based billing, as reported in GitHub Copilot usage-based billing. The free tier then gained a daily request cap instead of monthly. For GitHub users, Copilot Free integrated directly into pull requests and issues. Codex free did not. Codex lived inside ChatGPT or the CLI. A developer using GitHub Actions or reviewing pull requests would find Copilot more natural. But Copilot Free’s model quality lagged behind GPT-5.1 Codex on reasoning-heavy debugging. The GitHub Copilot hidden costs backlash documented user frustration with the new usage multipliers. OpenAI’s free Codex had no multipliers and no surprise overage fees. That simplicity became a selling point. Still, Copilot Free worked in VS Code without leaving the editor. Codex CLI required a terminal comfort level. Neither free tier included API access. Developers who used GitHub exclusively often stayed with Copilot. Those who wanted the strongest reasoning model migrated to Codex. The free tier war between OpenAI and GitHub was just beginning. Both companies knew that a developer’s free habit often became a paid plan within a year.
Key strengths:
- ✅ Native GitHub pull request support
- ✅ Works inside VS Code
- ✅ No ChatGPT account needed
- ✅ 2,000 monthly completions before June change
- ❌ Weaker reasoning model than Codex
- ❌ Usage-based billing after June 2026
- ❌ Overage multipliers caused backlash
Who it’s for: Choose GitHub Copilot Free if you live in GitHub and VS Code and do not need the strongest reasoning model.
Frequently Asked Questions
What exactly did ChatGPT Codex free include on May 13, 2026?
Free users got 50 agentic coding messages per day, 3 active coding agents, 1,000 terminal completions per month, and a 128,000 token context window. No credit card was required.
Did ChatGPT Codex free require a credit card?
No. OpenAI’s pricing page confirmed that the free tier had no credit card requirement and no expiry date. Users only needed a free OpenAI account.
How did the free tier compare to ChatGPT Plus?
ChatGPT Plus at $20 per month raised the daily Codex message limit to 200, active agents to 5, and monthly completions to 5,000. Plus also added priority compute during peak hours.
What happened to existing paid Codex users?
Existing paid users saw no reduction in limits. OpenAI kept ChatGPT Plus, Pro, and Team plans intact with higher quotas. Paid users also retained priority access and longer context retention.
Did the free tier include API access?
No. The free tier covered the ChatGPT web and CLI apps only. Separate API credits remained a paid product and required a developer account.
When did other AI coding tools change pricing in 2026?
GitHub Copilot moved to usage-based billing in June 2026. Google had already tightened Gemini API free tiers and cut some subscription prices earlier that month.
What Should You Remember?
- Free access: OpenAI gave every ChatGPT user 50 daily Codex messages starting May 13, 2026.
- Strict quotas: 1,000 monthly completions forced heavy users to upgrade or switch tools.
- Paid keeps edge: ChatGPT Plus at $20 per month added priority compute and 200 daily messages.
- Competitive response: GitHub Copilot’s usage-based June 2026 billing made Codex free more attractive.
- No API: Free users did not receive Codex API credits.
- Check limits: Always verify current caps on the OpenAI pricing page before building a workflow.
Free AI News is an independent editorial publication. Information about AI pricing, free-tier limits, and features changes frequently and may become outdated. Always verify current details through the vendor’s official pages. Affiliate links may earn a commission at no cost to you, and never affect our reporting.
