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On March 5, 2026, OpenAI released GPT-5.4, followed closely by the launch of GPT-5.4 mini and nano on March 17. With version iterations accelerating, many people are losing track of which version they are using or which one they should upgrade to. Today, we break down all currently active versions based entirely on information from the official OpenAI website and Help Center.
1GPT-5 Series Release Timeline (As of March 2026)
GPT-4o / GPT-4.1 / GPT-5 Retired
GPT-4o, GPT-4.1, GPT-4.1 mini, OpenAI o4-mini, and GPT-5 (Instant and Thinking) were retired from ChatGPT on February 13, 2026, and are no longer available.
GPT-5.2 Series
Released GPT-5.2 Instant (fast daily use) and GPT-5.2 Thinking (reasoning). Now migrated to Legacy Models and scheduled for official retirement on June 5, 2026.
GPT-5.3-Codex
A version focused on coding and agent execution capabilities, tailored for developer scenarios. Its coding capabilities were later integrated into GPT-5.4.
GPT-5.3 Instant
Optimizes the daily conversation experience and reduces "teasing" responses (such as "If you would like to know..."). It is currently the default daily model for all users.
GPT-5.4 Thinking ➕ GPT-5.4 Pro Current Flagship
Integrates the coding capabilities of GPT-5.3-Codex, strengthens professional work scenarios such as spreadsheets, presentations, and documents, and supports reasoning while adjusting direction on the fly. GPT-5.4 Thinking is available for Plus/Team/Pro users, while GPT-5.4 Pro is restricted to Pro and Enterprise users.
GPT-5.4 mini ➕ GPT-5.4 nano New
mini is available to Free and Go users (via the "Thinking" entry point), offering speeds over 2x faster than GPT-5 mini, and also serves as an automatic fallback for Plus/Pro users when rate limits are reached. nano is available exclusively via API, priced at $0.20 per million input tokens, designed specifically for developer batch tasks.
The GPT-5.1 Instant, GPT-5.1 Thinking, and GPT-5.1 Pro versions have all been discontinued. Existing conversations using these versions will be automatically migrated to the corresponding current versions (GPT-5.3 Instant / GPT-5.4 Thinking / GPT-5.4 Pro) to continue running.
2Subscription Plans: Free / Go / Plus / Pro
- GPT-5.3 Instant (Main)
- GPT-5.4 mini (Limited use)
- Daily limits apply
- 16K token context
- GPT-5.3 Instant
- GPT-5.4 mini (Thinking)
- 10x more messages than Free
- 32K token context
- GPT-5.4 Thinking (Primary)
- Auto-switch to 5.4 mini on limit
- Image generation, Code Interpreter
- Deep Research
- Limited Sora video access
- GPT-5.4 Pro (Strongest, Unlimited)
- 128K token context
- No usage limits
- Extended Sora video (1080p/4K)
- Maximum Deep Research quota
3Horizontal Comparison of Models
| Model | Positioning | Speed | Best For | Available Plans |
|---|---|---|---|---|
| GPT-5.4 nano | Ultra-small & Budget | Blazing Fast | Data classification and extraction (API only, $0.20/M tokens) | API Only |
| GPT-5.4 mini | Lightweight Reasoning | 2x➕ faster than 5 mini | Daily chat, coding assistance, backup for free users | Free / Go / Plus Backup |
| GPT-5.3 Instant | Fast Everyday | Fast | Q&A, translation, writing, default model for all users | All Plans |
| GPT-5.4 Thinking | Current Flagship | Medium | Complex copywriting, deep research, spreadsheets, coding | Plus / Team / Pro |
| GPT-5.4 Pro | Ultimate Professional | Slower | Ultra-complex tasks, maximum reasoning resources, long documents | Pro / Enterprise Exclusive |
GPT-5.4 has now replaced GPT-5.2 as the default reasoning model for ChatGPT. GPT-5.2 Thinking will be retained as a "Legacy Model" until it is officially retired after June 5, 2026. If you are still used to using 5.2, learn more about 5.4 while it's still available and switch over as early as possible.
4Which One Should We Choose?
If you mainly use ChatGPT for writing product descriptions, advertising copy, multi-language translation, or customer service scripts—Plus ($20/month) is completely sufficient. The copywriting and content production capabilities of GPT-5.4 Thinking are extremely strong, which is more than enough for daily work.
You should only consider Pro if you heavily rely on AI every day to handle ultra-complex tasks (such as analyzing large amounts of financial data or processing ultra-long documents), or if you frequently hit Plus rate limits that affect your work efficiency. For most sellers, Pro's $200/month is not worth it.
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❓ Frequently Asked Questions (FAQ)
As of March 2026, the latest version is the GPT-5.4 series: GPT-5.4 Thinking (released on March 5, 2026, for Plus/Team/Pro users), GPT-5.4 Pro (released on the same day, exclusive to Pro/Enterprise), and GPT-5.4 mini and nano (released on March 17, 2026, with mini for free users and nano for API only). Source: OpenAI Official Website ➕ Help Center Release Notes.
Yes, but the lightweight version. Starting March 17, 2026, Free and Go users can access GPT-5.4 mini by clicking the "Thinking" option in the chat box "➕" menu. GPT-5.4 mini is over 2 times faster than GPT-5 mini. The full GPT-5.4 Thinking requires a Plus subscription or higher.
The core difference is: Plus provides rate-limited access to GPT-5.4 Thinking, automatically switching to 5.4 mini once the limit is reached; Pro provides unlimited access to GPT-5.4 Pro, along with a larger context window (128K tokens) and higher Sora video specs (1080p/4K, up to 90 seconds). For regular cross-border sellers, Plus is entirely sufficient; Pro is only worth it for professional users whose AI work is central to their income and who frequently hit rate limits.
According to OpenAI's official statement, the core improvements of GPT-5.4 are: ① It integrates the coding capabilities of GPT-5.3-Codex, making it the first version to unify cutting-edge coding capabilities into the main reasoning model; ② Significant improvements in professional working scenarios such as spreadsheets, presentations, and documents; ③ Support for displaying plans during the reasoning process, allowing users to adjust directions midway; ④ More concise output with fewer redundant headings and formatting. GPT-5.2 will be retired on June 5, 2026.
ChatGPT Go is an entry-level paid plan launched by OpenAI in early 2026 at $8/month, positioned between the free version and Plus. It uses the GPT-5.3 Instant model, offers 10 times the message limit of the free version, and has a 32K token context window. If you find the free version limits insufficient but don't need the full Plus features, Go is a cost-effective choice. Plus users, on the other hand, get access to advanced features like GPT-5.4 Thinking and Deep Research.
Plus ($20/month) is enough. GPT-5.4 Thinking has extremely strong content generation capabilities and can handle copywriting, translation, and scripts. To actually run ads, you also need a clean and stable Facebook account. TGXaccount offers a variety of Facebook accounts starting from 4 RMB, or you can directly buy ready-made ChatGPT Plus accounts to save the hassle of subscribing yourself. If you have any questions, contact Telegram customer service (look for the ⭐️ verified badge).
