GPT-4.1
GPT-4.1 is OpenAI's flagship model for complex tasks. It is well suited for problem solving across domains.
OpenAI OpenAI's flagship model for complex tasks
GPT-4.1 is a text generation model developed by OpenAI and released in April 2025. It is positioned as OpenAI's flagship model for handling complex, multi-domain tasks and is available to developers via the OpenAI API. The model supports a 200,000-token context window, enabling it to process and reason over long documents, codebases, and extended conversations in a single request. Its training data has a knowledge cutoff of May 31, 2024.
GPT-4.1 is designed for problem solving across a wide range of domains, including coding, analysis, instruction following, and structured output generation. It is an API-only model, meaning it is accessible through the OpenAI platform rather than through ChatGPT's consumer interface. Developers building agents, pipelines, or applications that require handling large amounts of context or complex multi-step instructions are the primary intended audience for this model.
What GPT-4.1 supports
Long Context Window
Processes up to 200,000 tokens in a single request, allowing it to handle full codebases, lengthy documents, or extended multi-turn conversations without truncation.
Text Generation
Generates coherent, detailed text responses across domains including analysis, summarization, and open-ended question answering.
Code Generation
Writes, explains, and debugs code across multiple programming languages, and is suited for agentic coding workflows that require multi-step reasoning.
Instruction Following
Follows complex, multi-part instructions with high fidelity, making it well suited for structured pipelines and automated agent tasks.
Structured Output
Returns responses in structured formats such as JSON, enabling reliable integration with downstream systems and APIs.
Agentic Task Handling
Supports multi-step, tool-using agent workflows where the model must plan, execute, and iterate across a sequence of actions.
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Get Started FreeBenchmark scores
Scores represent accuracy — the percentage of questions answered correctly on each test.
| Benchmark | What it tests | Score |
|---|---|---|
| MMLU-Pro | Expert knowledge across 14 academic disciplines | 80.6% |
| GPQA Diamond | PhD-level science questions (biology, physics, chemistry) | 66.6% |
| MATH-500 | Undergraduate and competition-level math problems | 91.3% |
| AIME 2024 | American math olympiad problems | 43.7% |
| LiveCodeBench | Real-world coding tasks from recent competitions | 45.7% |
| HLE | Questions that challenge frontier models across many domains | 4.6% |
| SciCode | Scientific research coding and numerical methods | 38.1% |
Common questions about GPT-4.1
What is the context window size for GPT-4.1?
GPT-4.1 supports a context window of 200,000 tokens, which allows it to process large documents, long conversation histories, or extensive codebases in a single request.
What is the knowledge cutoff date for GPT-4.1?
GPT-4.1 has a training data cutoff of May 31, 2024, meaning it does not have knowledge of events or information published after that date.
Is GPT-4.1 available in ChatGPT?
GPT-4.1 is an API-only model and is not available through the ChatGPT consumer interface. It is accessible via the OpenAI API and platforms like MindStudio.
Who publishes GPT-4.1 and when was it released?
GPT-4.1 is published by OpenAI and was announced and made available in April 2025.
What types of tasks is GPT-4.1 best suited for?
GPT-4.1 is designed for complex, multi-domain tasks including coding, long-document analysis, instruction following, structured output generation, and agentic workflows that require multi-step reasoning.
What people think about GPT-4.1
Community discussion around GPT-4.1 was generally positive at launch, with threads on r/singularity generating hundreds of upvotes and comments around its April 2025 release. Users noted its performance on benchmarks such as HealthBench, where it was cited alongside o3 as reaching a level where physician review no longer improved AI-generated medical answers.
A notable concern raised in later threads is that GPT-4.1, along with GPT-4o and other models, is scheduled to be retired from ChatGPT in February 2026, prompting discussion about model lifecycle and continuity. The model's API-only availability was a recurring point of context in community conversations.
OpenAI will retire GPT-4o, GPT-4.1, GPT-4.1 mini, and o4-mini from ChatGPT on February 13
OpenAI gets ready to launch GPT-4.1
GPT-5 model art has now been pushed to the OpenAI CDN. With GPT-4.1 this happened a day before the launch - it's coming!
OpenAI confirmed to be announcing GPT-4.1 in the livestream today
In September, 2024, physicians working with AI did better at the Healthbench doctor benchmark than either AI or physicians alone. With the release of o3 and GPT-4.1, AI answers are no longer improved on by physicians (OpenAI)
Parameters & options
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