OpenAI Advanced Available in FlowHunt

GPT-4.1

GPT-4.1 is an advanced AI model suited for demanding production workloads, developed by OpenAI and released in April 2025. It is a proprietary closed-weight model, available through the OpenAI API. The 1M-token context window is large enough to hold entire codebases, lengthy technical documents, or extended agentic sessions without truncation.

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GPT-4.1 was released on April 14, 2025 as OpenAI’s API-optimised model bridging the GPT-4o generation and GPT-5. Rather than maximising benchmark scores, it was tuned for production reliability: more consistent tool-calling, better instruction adherence across long conversations, and a 1M-token context window that made it the first OpenAI model suitable for ingesting entire software repositories in a single prompt. Many long-document and RAG-based applications were built around GPT-4.1’s stable API surface before GPT-5 arrived, and it remains in production use for workloads that prioritise the 1M-context capability at a lower price point than the GPT-5 series.
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Benchmarks

Each score appears once, with its rank among tracked models and who measured it.

Compared with Advanced peers on the same scale
  • GPT-4.1this model
  • Mistral Large 4this model leads on 0 of 2
  • Claude Sonnet 5.5this model leads on 0 of 2
Verified independent evaluator, counted in the ranking Self-reported published by OpenAI, shown but not ranked
Overall

AA Intelligence Index

Independent composite of agent, coding, knowledge and science tests by Artificial Analysis (v4).

Source ↗

GPT-4.1 12.7 Mistral Large 4 38.4 Claude Sonnet 5.5 56.0
#38of 45 Verified
Coding

SWE-bench Verified

500 verified GitHub issues. Saturated at the frontier.

GPT-4.1 54.6% Mistral Large 4 No score Claude Sonnet 5.5 No score
Not ranked Self-reported
Reasoning

Humanity's Last Exam

Expert-written questions across 100+ subjects, no tools.

Source ↗

GPT-4.1 4.2% Mistral Large 4 35.0% Claude Sonnet 5.5 55.0%
#39of 44 Verified

GPQA Diamond

Graduate-level science questions that search cannot answer.

Source ↗Also: Verified 65.4% (Vals AI own implementation)

GPT-4.1 66.6% Mistral Large 4 No score Claude Sonnet 5.5 No score
#32of 37 Verified

ARC-AGI-2

Novel visual puzzles that cannot be memorised.

Source ↗

GPT-4.1 0.4% Mistral Large 4 No score Claude Sonnet 5.5 No score
#25of 27 Verified

What to Use GPT-4.1 For

Software Engineering

It handles code generation, bug fixing, and code review for typical development tasks, though frontier models score significantly higher on fully autonomous complex engineering.

Long-Document & Codebase Analysis

With a 1M-token context window, GPT-4.1 can ingest entire software repositories, long legal contracts, book-length research reports, or extensive conversation histories in a single prompt — enabling deep document Q&A, cross-file codebase reasoning, and comprehensive summarisation without chunking heuristics or RAG pipelines.

Strengths and limitations

Strengths

  • Solid coding assistance
  • Very long documents and large codebases (1M context)

Limitations

  • Closed-weight — cannot be self-hosted or fine-tuned on private data

Use it in FlowHunt

Use GPT-4.1 in any flow, next to your own tools and knowledge sources.

  1. 1Open a flow, or create one from a template
  2. 2Add an AI Agent or Generator component
  3. 3Pick GPT-4.1 in the model selector

Related AI Models

About OpenAI San Francisco, CA · Founded 2015 · openai.com

OpenAI was founded in December 2015 as a nonprofit AI research laboratory by Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, John Schulman, and Wojciech Zaremba, with the mission of developing artificial general intelligence (AGI) that benefits all of humanity. In 2019 it created a capped-profit subsidiary, OpenAI LP, to raise institutional capital and scale model training. The company is known for the GPT series of language models (GPT-1 through GPT-6.1), the DALL-E image generation series, Whisper speech recognition, and Sora video generation. OpenAI operates the ChatGPT consumer application, a developer API, and enterprise services through Microsoft Azure. As of 2026 it maintains a close strategic partnership with Microsoft, which is the company's largest investor and cloud provider.

openai.com ↗

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Frequently asked questions

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