GPT-4.1

by OpenAI

GPT-4.1 is OpenAI's general purpose model built around a 1 million token context window, letting it reason over very large documents, full codebases, and long conversation histories in a single call. OpenAI reports it was trained to keep reliable attention across the full context length, with notable improvements in coding and instruction following over GPT-4o. It is multimodal, supporting text and image inputs, and produces structured output that conforms to a supplied JSON schema. Function calling lets it compose external tools into agentic workflows. The model suits applications that need deep document analysis, code generation with broad context, complex reasoning over large corpora, and tool-using agents.

Key info

Input
Output
Features
Context window
1M
Max output
33K
Input price
$2.00 /1M
Output price
$8.00 /1M
  • US residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Available routes

GPT-4.1 runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance β€” full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
OpenAIUSEnterpriseNo$2.00$8.00

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting GPT-4.1 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

OpenAI β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Benchmarks

Independent benchmark scores β€” composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#199 of 531 LLMs
TierEfficient
Output speed111 tok/s
First token0.59s
Intelligence Index19.4
Coding Index21.8
Math Index34.7
Reasoning & knowledge
MMLU-Pro
81%
GPQA Diamond
67%
Humanity's Last Exam
5%
Long-context reasoning
61%
Coding
LiveCodeBench
46%
SciCode
38%
Agentic & tool use
Terminal-Bench Hard
14%
τ²-Bench Telecom
47%
Math & instruction following
AIME 2025
35%
IFBench
43%

Get started

Call GPT-4.1 through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β€” Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent β€” Claude Code, Cursor, Codex, and more β€” and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "openai/gpt-4.1",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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Side-by-side on privacy, EU hosting, pricing, and benchmarks.

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GPT-4.1 by OpenAI β€” pricing, benchmarks | Opper AI