How to Get Access to GPT-5.5 in ChatGPT, Codex, and API

Apr 24, 2026

I updated my Codex app the day GPT-5.5 was announced, checked the model selector, and… nothing. No GPT-5.5 option. Just the same GPT-5.4 I’d been using.

A Reddit thread confirmed I wasn’t alone. One user with 42 upvotes asked: “Anyone else who still doesn’t have it in Codex? I updated and still nothing.” Another asked: “Is it available on Plus+? free?”

The rollout isn’t instant. Here’s what I learned about how access actually works.

The Direct Answer

GPT-5.5 is rolling out to paid ChatGPT and Codex tiers first. GPT-5.5 Pro (the higher-capability variant) is available to business and pro-tier accounts for harder tasks. API access is “coming soon” according to OpenAI’s announcement—no exact date yet.

If you updated and still don’t see GPT-5.5, you’re likely in a later rollout wave or need to check your subscription tier.

Access by Tier

Here’s what’s available right now:

Tier          | GPT-5.5 Access | GPT-5.5 Pro | API Access
--------------|----------------|-------------|------------
Free          | Not available  | No          | No
Plus          | Rolling out    | No          | No
Pro           | Available      | Yes         | No
Team          | Available      | Yes         | No
Enterprise    | Available      | Yes         | API soon
API Users     | Not yet        | Not yet     | Coming soon

The key distinction:

GPT-5.5: The standard model, rolling out to Plus and above
GPT-5.5 Pro: Higher capability for complex tasks, Pro/Team/Enterprise only
API: Both models will eventually be available via API, but not yet

How to Check Your Access

In ChatGPT

Log into ChatGPT
Click the model selector dropdown (top of chat)
Look for GPT-5.5 or GPT-5.5 Pro in the list

If you see it, you have access. If not, you’re either on Free tier or in a later rollout wave.

In Codex App

1. Update to latest app version
   - iOS: App Store > Updates
   - Android: Play Store > My apps

2. Open Codex and check model selector
   - Tap model name at top of screen
   - Look for GPT-5.5 in dropdown

3. If not visible:
   - Check subscription tier in Settings
   - Wait for rollout (can take days to weeks)

The Codex rollout seems slower than ChatGPT web. Multiple Reddit users reported updating the app but not seeing the new model.

Check Your Subscription Tier

In ChatGPT/Codex settings, verify what tier you’re actually on:

ChatGPT: Settings > Subscription
Codex: Settings > Account

Look for:
- "Plus" - Rolling out access
- "Pro" - Should have GPT-5.5 + Pro variant
- "Team" - Should have full access
- "Enterprise" - Should have full access

Some users assume they’re on Pro when they’re actually on Plus. The tier names can be confusing.

Why Rollout Takes Time

OpenAI doesn’t flip a switch for everyone. Rollouts happen in waves for several reasons:

Infrastructure capacity - New models need compute resources
Quality monitoring - They watch for issues before wider release
User feedback - Early users help identify problems
Regional differences - Some regions get access later

The announcement said “rolling out to paid tiers” which implies gradual deployment, not instant availability.

What to Do If You Don’t Have Access

Option 1: Wait

The simplest approach. If you’re on a paid tier, you’ll get it eventually. Check daily in the model selector.

Option 2: Verify Your Tier

Make sure you’re actually on a tier that gets access:

Free → Plus:   GPT-5.5 rolling out
Plus → Pro:    GPT-5.5 Pro for harder tasks
Pro → Team:    Same access, team features

If you’re on Free, you won’t see GPT-5.5 until OpenAI expands availability.

Option 3: Check App Version

Sometimes the app update itself is delayed:

iOS: Settings > General > iPhone Storage > Codex
Android: Settings > Apps > Codex

Compare version number with App Store/Play Store listing

An old app version won’t show new model options even if your account has access.

API Timeline

For developers waiting for API access:

Current state: Not available
OpenAI statement: "Coming soon"
Expected pricing: Higher than GPT-5.4 (2x price rumored)
Monitor: platform.openai.com/docs/models

There’s no published date. Based on previous rollouts:

GPT-4 took weeks to reach general API availability
GPT-4 Turbo was faster, about 1 week after announcement
GPT-5.4 was available within days

GPT-5.5 might follow similar patterns, but “coming soon” is the only official guidance.

Common Questions I Saw

”Is GPT-5.5 on Plus?”

Based on the announcement and tier matrix: Yes, but rolling out. If you’re on Plus and don’t see it, you’re in a later wave.

”Is GPT-5.5 Pro worth upgrading?”

GPT-5.5 Pro is designed for harder tasks—complex reasoning, multi-file debugging, scientific analysis. If your use cases are mostly quick coding questions, standard GPT-5.5 is probably sufficient.

”Why does my colleague have it but I don’t?”

Rollout waves aren’t always predictable. Factors that might affect timing:

Account age
Usage patterns
Geographic region
Random selection for load balancing

There’s no official explanation, and asking support typically yields “wait for rollout” responses.

Quick Reference

Problem                    | Check                   | Solution
---------------------------|------------------------|---------------------------
Updated app, no GPT-5.5    | Subscription tier      | Upgrade if on Free
                           | App version            | Force update if old
                           | Model selector         | May need rollout wait
Paid tier, no access       | Account tier name      | Verify Plus/Pro/Team
                           | Wait time              | 1-7 days typical rollout
Need API access            | OpenAI docs            | Not yet available
                           | Platform status        | Monitor announcements
Need Pro variant           | Tier level             | Pro/Team required
                           | Task complexity        | Only for hard tasks

What I’m Doing

I’m on Plus. I check the model selector daily. When GPT-5.5 appears, I’ll test it on my typical workflow. Until then, GPT-5.4 works fine for most tasks.

For API work, I’m not blocking any projects on GPT-5.5. The “coming soon” timeline is too vague to plan around. I’ll switch when it’s available.

Model rollout patterns: How OpenAI deploys new models incrementally
Tier benefits: What each subscription level provides
API vs ChatGPT: Different access paths with different timelines

Final Words + More Resources

My intention with this article was to help others share my knowledge and experience. If you want to contact me, you can contact by email: Email me

Here are also the most important links from this article along with some further resources that will help you in this scope:

Oh, and if you found these resources useful, don’t forget to support me by starring the repo on GitHub!