GPT-4.1
An upgraded version of OpenAI's GPT-4 series language models, supporting tasks such as code generation and multi-turn dialogue. GPT-4.1 is integrated into the paid tier of GitHub Copilot, where it provides an unrestricted Agent mode for development workflows.
Core Facts
Timeline (last 90 days)
In HealthBench, doctors first wrote the grading rubric, and OpenAI's GPT-4.1 evaluator exceeded the average doctor's level on 5 of 7 topics.
Chroma's 2025 research tested 18 frontier models (including GPT-4.1, Claude Opus 4 and Gemini 2.5) and found that accuracy did not decline uniformly as input length grew, and that even a single distractor paragraph noticeably harmed performance relative to a cleaner baseline.
Merging the values of two columns of data into a single row in one column before passing it to the AI is easier for the model to align than passing two separate columns, reducing prompt interpretation costs.
The author uses the GPT-4.1 model (also mentioning that 4.1 mini can be used) in this solution, called via an HTTP request node.
An early LangChain user started using LangChain in the GPT-4.1 era, then spent two years building a proprietary TypeScript Agent runtime, and has now initiated a discussion on Reddit about Agent tech stack selection
Ringg claims that using GPT-5.6 can reduce costs by 90% compared to GPT-4.1.
The experiment's author has built an offline testing framework using GPT-4.1 and Claude Sonnet 4.6, containing 12 tasks spanning 8 families, 12 control configurations, and a total of 576 planned pipelines.
The MERIT experiment adopted a pre-registered 3-model × 3-random-seed grid experiment using GPT-4.1 and Claude Haiku 4.5.
The research team spent $42.57 on large-scale experiments across 23,440 scoring episodes, using a pre-registered 3-model × 3-random-seed grid design involving GPT-4.1 and Claude Haiku 4.5.
All Facts (8)
GPT-5.5是OpenAI于2025年中期发布的模型，相比GPT-4o在推理深度和上下文理解方面有显著提升
90%UnverifiedIn HealthBench, doctors first wrote the grading rubric, and OpenAI's GPT-4.1 evaluator exceeded the average doctor's level on 5 of 7 topics.
50%UnverifiedChroma's 2025 research tested 18 frontier models (including GPT-4.1, Claude Opus 4 and Gemini 2.5) and found that accuracy did not decline uniformly as input length grew, and that even a single distractor paragraph noticeably harmed performance relative to a cleaner baseline.
50%UnverifiedMerging the values of two columns of data into a single row in one column before passing it to the AI is easier for the model to align than passing two separate columns, reducing prompt interpretation costs.
50%UnverifiedThe author uses the GPT-4.1 model (also mentioning that 4.1 mini can be used) in this solution, called via an HTTP request node.
50%UnverifiedRingg claims that using GPT-5.6 can reduce costs by 90% compared to GPT-4.1.
50%UnverifiedThe MERIT experiment adopted a pre-registered 3-model × 3-random-seed grid experiment using GPT-4.1 and Claude Haiku 4.5.
50%UnverifiedThe research team spent $42.57 on large-scale experiments across 23,440 scoring episodes, using a pre-registered 3-model × 3-random-seed grid design involving GPT-4.1 and Claude Haiku 4.5.
50%