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GPT-4.1

AdvancedAvailable in FlowHunt

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.

On the FlowHunt AI Leaderboard it is one of 24 tracked models, evaluated across 1 benchmark. Standout scores: 54.6% on SWE-bench Verified (#12 of 13).

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.

Note: Developer-focused; strong long-context (IFEval 87.4%) and instruction following.

Released
April 2025
Context
1M tokens
Weights
Closed
Tier
Advanced
Provider
OpenAI

GPT-4.1 Benchmark Rankings

Rank among all 24 models tracked on this leaderboard. SR = self-reported · 3P / AA / C = independently verified.

BenchmarkScoreRankSourceWhat it measures
SWE-bench Verified54.6%12 of 13SRReal GitHub issue resolution (500 verified issues)

Detailed Benchmark Scores

SWE-V SR
54.6%
Real GitHub issue resolution (500 verified issues)

GPT-4.1 vs. Advanced Peers

Head-to-head benchmark comparison with other Advanced-tier models. Higher is better for all metrics.

BenchmarkGPT-4.1Claude Sonnet 4.6DeepSeek V4-Flash
SWE-V54.6%79.6%79.0%

About OpenAI

OpenAI Founded 2015 · San Francisco, CA
Website →

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-5.5), 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.

Use Cases

What to Use GPT-4.1 For

Software Engineering
Long-Document & Codebase Analysis

Strengths & Limitations

Strengths

  • Solid coding assistance — 54% SWE-bench Verified
  • Very long documents and large codebases (1M context)

Limitations

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

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Frequently asked questions

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