# GPT-4.1 ![Organization](https://img.shields.io/badge/Org-OpenAI-412991) ![Context](https://img.shields.io/badge/Context-1M%20tokens-1f6feb) ![Pricing](https://img.shields.io/badge/Price-%242%20%2F%20%248%20per%201M-2da44e) ![License](https://img.shields.io/badge/License-Proprietary-d29922) ![Modality](https://img.shields.io/badge/Modality-Text%20%2B%20Vision-8957e5) ![Released](https://img.shields.io/badge/Released-Apr%202025-555) > **Quick answer:** GPT-4.1 is OpenAI's April 2025 GPT-4-series update, featuring a 1M-token context window — the largest in the GPT-4 family. It scores 97.1% on the AI2 Reasoning Challenge, 9.4% on CyberGym, and 32.8% on BigCodeBench, with a SHADE-Arena score of 5.3. Priced at $2 input / $8 output per 1M tokens. ## At a Glance **Where GPT-4.1 leads** - 1M-token context window — largest in the GPT-4.x series, matching Gemini 2.5 Pro - 97.1% AI2 Reasoning Challenge — strong multi-discipline science reasoning - 9.4% CyberGym — best in the GPT-4 family for cybersecurity tasks - Multimodal vision support - Lower latency than o-series models — no internal reasoning overhead **Where it lags** - 5.40% Humanity's Last Exam — below the frontier (GPT-5.6 Sol: 52.7% on ALE) - AetherCode 10.5% — weak on competitive agentic programming - BigCodeBench 32.8% — moderate general coding performance - Superseded by GPT-5.x for new high-performance deployments **Best for:** Long-document analysis, whole-codebase tasks, instruction-heavy pipelines that require a 1M context window at GPT-4 pricing. ## What GPT-4.1 Is GPT-4.1 is an iterative update to the GPT-4 line, released April 14, 2025 alongside GPT-4.1 mini and nano. Its headline feature is a 1M-token context window — the same as Gemini 2.5 Pro, enabling full-codebase analysis and long-document workflows without chunking. Unlike the o-series, GPT-4.1 is a standard auto-regressive model with no internal chain-of-thought reasoning. This gives it lower latency and more predictable token costs, at the trade-off of lower accuracy on multi-step reasoning tasks. It is the appropriate GPT-4 choice when the 1M context window is a hard requirement and o-series reasoning latency is unacceptable. GPT-4.1's 97.1% AI2 Reasoning Challenge score (covering physics, chemistry, biology, and other sciences) indicates strong factual reasoning at the GPT-4 tier. Its 9.4% CyberGym score is notably higher than o4-mini (2.5%), suggesting better capability on security analysis tasks for a non-reasoning model. ## Specifications | Field | Value | |---|---| | Organization | OpenAI | | Parameters | Undisclosed | | Context window | 1,000,000 tokens | | Max output | 32,768 tokens | | License | Proprietary (API only) | | Release date | April 14, 2025 | | Knowledge cutoff | June 2024 (estimated) | | Modality | Text + Vision (multimodal) | ## Pricing | | Input (per 1M tokens) | Output (per 1M tokens) | |---|---|---| | OpenAI API | $2.00 | $8.00 | Prompt caching provides a 75% discount on cached input. Pricing per [OpenAI pricing page](https://openai.com/api/pricing/). ## Context Window GPT-4.1 has a **1,000,000-token context window** — roughly **750 pages** of text in a single request. This matches Gemini 2.5 Pro and makes GPT-4.1 a direct competitor for long-context workloads at a similar price point. ## Public Benchmark Scores | Benchmark | Score | Source | Date | |---|---|---|---| | [AI2 Reasoning Challenge](/benchmarks/ai2-reasoning-challenge) | 97.1% | Benchgen evaluation | 2025-07 | | [BigCodeBench](/benchmarks/bigcodebench) | 32.8% | Benchgen evaluation | 2025-07 | | [CyberGym](/benchmarks/cybergym) | 9.4% | Benchgen evaluation | 2025-07 | | [Humanity's Last Exam](/benchmarks/humanitys-last-exam) | 5.40% | Benchgen evaluation | 2025-07 | | [AetherCode](/benchmarks/aethercode) | 10.5% | Benchgen evaluation | 2025-07 | | [SHADE-Arena](/benchmarks/shade-arena) | 5.3 overall success | [Anthropic research post](https://www.anthropic.com/research/shade-arena-sabotage-monitoring) | 2025-06 | ## GPT-4.1 vs Alternatives | Model | Context | AI2 RC | CyberGym | Price (in/out per 1M) | |---|---|---|---|---| | **GPT-4.1** | 1M | 97.1% | 9.4% | $2 / $8 | | [o4-mini](/models/openai/o4-mini) | 200K | 95.9% | 2.5% | $1.10 / $4.40 | | [Gemini 2.5 Pro](/models/google/gemini-2-5-pro) | 1M | — | — | $1.25 / $10 | | [GPT-4o](/models/openai/gpt-4o) | 128K | — | — | $2.50 / $10 | GPT-4.1's main advantage over Gemini 2.5 Pro: marginally higher AI2 RC score, better CyberGym result. Gemini 2.5 Pro has higher HLE and broader multimodal capability. vs o4-mini, GPT-4.1 offers 5× more context window and better CyberGym at ~2× the cost. ## Use GPT-4.1 via API ```python from openai import OpenAI client = OpenAI(api_key="YOUR_API_KEY") response = client.chat.completions.create( model="gpt-4.1", messages=[{"role": "user", "content": "Analyse this entire codebase for architectural issues..."}], ) print(response.choices[0].message.content) ``` ## Related Models & Benchmarks - Compare: [GPT-4o](/models/openai/gpt-4o) · [o4-mini](/models/openai/o4-mini) · [Gemini 2.5 Pro](/models/google/gemini-2-5-pro) · [GPT-4.1 mini](/models/openai/gpt-4-1-mini) - Benchmarks: [AI2 Reasoning Challenge](/benchmarks/ai2-reasoning-challenge) · [CyberGym](/benchmarks/cybergym) · [BigCodeBench](/benchmarks/bigcodebench) · [SHADE-Arena](/benchmarks/shade-arena) ## Frequently Asked Questions

What is GPT-4.1?

GPT-4.1 is OpenAI's April 2025 GPT-4 series update featuring a 1M-token context window. It scores 97.1% on AI2 Reasoning Challenge and is priced at $2/$8 per 1M tokens.

What is GPT-4.1's context window?

GPT-4.1 supports a 1,000,000-token context window — roughly 750 pages of text — with up to 32,768 output tokens.

How much does GPT-4.1 cost?

GPT-4.1 costs $2.00 per 1M input tokens and $8.00 per 1M output tokens, with a 75% discount on cached input reads.

Is GPT-4.1 open source?

No. GPT-4.1 is a proprietary, API-only model. There are no open weights.

What is GPT-4.1's knowledge cutoff?

GPT-4.1's training knowledge cutoff is estimated at June 2024.

--- *Specs and scores sourced from OpenAI's official GPT-4.1 announcement (April 14, 2025) and Benchgen evaluations. Pricing cited to the OpenAI pricing page. Last updated 2026-07-24.*

GPT-4.1 — Files