The GPT-5 model family represents the most capable generation of large language models ever released by OpenAI. From the initial GPT-5.0 launch in August 2025 through the frontier GPT-5.4 release in March 2026, each version introduced measurable improvements in reasoning, coding, agentic behavior, and multimodal understanding.
This guide covers every GPT-5 variant, their capabilities, release timeline, and how to choose the right model for your workflow. Whether you are a developer building with the API, a business user evaluating plans, or a researcher tracking progress, this page provides the definitive overview.
The GPT-5 family launched in August 2025 and has evolved through five major versions. GPT-5.3 Instant serves as the default model for all ChatGPT users, delivering fast and reliable responses for everyday tasks. GPT-5.4 Thinking is the frontier reasoning model used for complex coding, agentic workflows, and professional analysis. GPT-5.4 Pro offers the highest capability tier exclusively for Pro plan subscribers at $200 per month. GPT-5.1 was deprecated on March 11, 2026, with all users migrated automatically to newer versions.
OpenAI adopted an iterative release strategy for GPT-5, shipping improvements every few months rather than waiting for a single monolithic update.
OpenAI released GPT-5.0 as the foundational model of the new generation. It introduced a redesigned architecture with deeper reasoning chains, improved factual accuracy, and native tool-use capabilities. GPT-5.0 supported text and image inputs from day one, setting the baseline for all subsequent iterations. Early benchmarks showed a 40% improvement over GPT-4o on graduate-level reasoning tasks.
The launch coincided with updates to OpenAI's model documentation and expanded API access for developers building production applications.
GPT-5.1 refined the base architecture with improved instruction following and reduced hallucination rates. GPT-5.2 followed with stronger mathematical reasoning and enhanced multilingual performance. Both versions served as stepping stones toward the more significant GPT-5.3 and GPT-5.4 releases. GPT-5.1 was ultimately deprecated on March 11, 2026, as GPT-5.3 Instant surpassed it on every benchmark.
GPT-5.3 Instant replaced all previous default models as the standard ChatGPT experience for every user tier. It delivers fast, reliable responses for conversational queries, information seeking, technical writing, and translation. The companion GPT-5.3-Codex variant emerged as the best agentic coding model, running 25% faster than general-purpose alternatives on software engineering benchmarks.
GPT-5.4 arrived as the frontier reasoning model with three tiers: Thinking for advanced reasoning tasks, Pro for the highest capability available exclusively to $200/month Pro subscribers, and mini for Free and Go users who activate the Thinking feature. GPT-5.4 Thinking matches or exceeds human professionals on 83% of GDPval evaluation benchmarks across coding, science, and business domains.
Compare every GPT-5 release by date, primary capability, availability, and current status.
| Version | Release Date | Key Capability | Availability | Status |
|---|---|---|---|---|
| GPT-5.0 | August 2025 | New architecture, native tool use | All plans | Active (legacy) |
| GPT-5.1 | Late 2025 | Improved instruction following | — | Deprecated Mar 11, 2026 |
| GPT-5.2 | Late 2025 | Math reasoning, multilingual | All plans | Active (legacy) |
| GPT-5.3 Instant | Early 2026 | Default fast model for all users | Free, Go, Plus, Pro, Business, Enterprise | Active — default |
| GPT-5.3-Codex | Early 2026 | Best agentic coding model | Plus, Pro, Business, Enterprise | Active |
| GPT-5.4 Thinking | March 2026 | Frontier reasoning, agentic, spreadsheets | Plus, Pro, Business, Enterprise | Active — frontier |
| GPT-5.4 Pro | March 2026 | Highest capability model | Pro ($200/mo) only | Active |
| GPT-5.4 mini | March 2026 | Lightweight reasoning via Thinking | Free, Go (via Thinking feature) | Active |
The GPT-5 family introduced architectural and capability advances that separated it from GPT-4 in fundamental ways.
GPT-5 models break complex problems into multi-step reasoning chains before generating a response. This produces more accurate answers on math, logic, science, and legal analysis tasks. GPT-5.4 Thinking explicitly shows its reasoning process, giving users transparency into how conclusions are reached.
Starting with GPT-5.3-Codex, the family supports autonomous task execution. Models can plan multi-step workflows, call tools, browse the web through Operator, write and run code, and iterate on results without manual intervention. This makes GPT-5 the foundation for AI agents that complete real-world tasks end to end.
GPT-5.4 matches or exceeds professionals on 83% of GDPval benchmarks. It handles spreadsheet analysis, financial modeling, scientific literature review, and legal document parsing at a level that previously required domain experts. The Pro variant pushes this ceiling further for the most demanding enterprise use cases.
Different ChatGPT subscription tiers provide access to different GPT-5 variants.
The Free plan ($0) and Go plan ($8/month) provide access to GPT-5.3 Instant as the default model and GPT-5.4 mini through the Thinking feature. The Plus plan ($20/month) unlocks GPT-5.3-Codex and GPT-5.4 Thinking for advanced reasoning and coding workflows. The Pro plan ($200/month) provides exclusive access to GPT-5.4 Pro, the highest-capability model in the family. Business ($25/user/month), Enterprise (custom pricing), Edu (universities), and Teachers (free for K-12 educators until June 2027) plans include GPT-5.4 Thinking with team management features.
OpenAI continues to expand access to newer models across all tiers. When GPT-5.1 was deprecated, all users were automatically migrated to GPT-5.3 Instant with no disruption to existing conversations or workflows.
Start using GPT-5.3 Instant for free today, or upgrade to Plus for GPT-5.4 Thinking and frontier-level reasoning capabilities.
Get Started FreeAnswers to common questions about the GPT-5 model family, versions, and availability.
GPT-5.0 launched in August 2025 as the first model in the GPT-5 family. OpenAI then released iterative updates through GPT-5.1, GPT-5.2, GPT-5.3, and GPT-5.4, with the latest arriving in March 2026. This iterative approach allowed OpenAI to ship improvements faster than the previous generation's release cycle.
Each GPT-5 release brought targeted improvements. GPT-5.0 introduced the new architecture and native tool use. GPT-5.1 improved instruction following but was later deprecated. GPT-5.2 enhanced mathematical reasoning and multilingual support. GPT-5.3 Instant became the default fast model for all users, while GPT-5.3-Codex specialized in agentic coding. GPT-5.4 Thinking delivers frontier reasoning, GPT-5.4 Pro offers the highest capability, and GPT-5.4 mini brings reasoning to free users.
No. OpenAI deprecated GPT-5.1 on March 11, 2026. All traffic that previously used GPT-5.1 was automatically migrated to GPT-5.3 Instant. Users did not need to take any action, and existing conversations continued without interruption. The deprecation reflected GPT-5.3's superiority across all evaluation benchmarks.
For everyday conversations, information retrieval, writing, and translation, GPT-5.3 Instant is the recommended default. For complex reasoning, advanced coding, spreadsheet analysis, or agentic workflows, GPT-5.4 Thinking is the best choice. Developers building agentic coding tools should use GPT-5.3-Codex. If you need the absolute highest capability and have a Pro subscription, GPT-5.4 Pro provides the ceiling. Free and Go users access reasoning through GPT-5.4 mini via the Thinking feature.
GPT-5 is a generational improvement over GPT-4 in every measurable dimension. Reasoning depth, factual accuracy, coding ability, and agentic capabilities all surpass GPT-4o and GPT-4 Turbo. GPT-5.4 Thinking matches or exceeds human professionals on 83% of GDPval benchmarks. The GPT-5 family also introduced specialized variants and native integration with features like Operator and Deep Research that GPT-4 did not support.
Explore specific GPT-5 models and ChatGPT features in depth.
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