GPT-4.1

Name: GPT-4.1
Brand: OpenAI
SKU: gpt-4-1
Price: 2.4 USD
Availability: InStock

Besedilo in klepetNovoRazpoložljivo

od OpenAIgpt-4-1

OpenAI's newest flagship model. Improved reasoning, instruction following, and coding over GPT-4o.

Preizkusi Pridobi API ključ Primerjaj

Cena · 1M vhod/izhod: 2,40 $ / 9,60 $
Kontekst: 1.000.000 žetonov
Največji izhod: 32.768 žetonov
Vhod → Izhod: Besedilo → Besedilo
Razvijalec: OpenAI
Posodobljeno: 23. september 2026

Igrišče

Preizkusi GPT-4.1

Klepet

2,40 $/1M vhod

Pošlji sporočilo. Odgovor pride v celoti, ko je model končan (brez pretakanja).

Sistemski poziv

Maks. dolžina odgovora (tokeni)

⌘/Ctrl + Enter

Ta zagon

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O GPT-4.1

PovzetekOd 23. september 2026

GPT-4.1 je model razvijalca OpenAI iz kategorije Besedilo in klepet. Na Railwail stane GPT-4.1 2,40 $ na 1M vhodnih žetonov in 9,60 $ na 1M izhodnih žetonov. Kontekstno okno vsebuje 1.000.000 žetonov, odgovor pa je lahko dolg do 32.768 žetonov.

Ozadje

O OpenAI

Ustanovljeno 2015 · San Francisco, USA

OpenAI was founded in 2015 as a non-profit research lab by Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, Wojciech Zaremba and John Schulman. In 2019 it transitioned into a capped-profit company to raise capital from Microsoft, which has invested over $13 billion. OpenAI is the publisher of the GPT series papers (GPT-1 in 2018, GPT-2 in 2019, GPT-3 in 2020, GPT-4 Technical Report in 2023), the InstructGPT paper that introduced RLHF for instruction following, and the GPT-4o System Card. Major products include ChatGPT (launched November 2022, with over 200M weekly active users), the OpenAI API, the o-series reasoning models, Sora for text-to-video and DALL-E for image generation. GPT-4.1 was released in April 2025 as an API-only model family (4.1, 4.1 mini and 4.1 nano) optimised for developers, with major improvements over GPT-4o on coding, instruction following and long-context tasks. The 2025 reported valuation exceeded $300 billion.

Obiščite OpenAI

Arhitektura

Decoder-only Transformer (developer-focused flagship)

GPT-4.1 launched in April 2025 as an API-only successor to GPT-4o aimed primarily at developers and agentic workloads. It is a decoder-only Transformer trained on an updated multi-trillion-token mixture of text, code and image-text pairs, with a knowledge cutoff of June 2024. The model family ships in three sizes (4.1, 4.1 mini, 4.1 nano) sharing the same training recipe but distilled to different capability/latency points. The headline change versus GPT-4o is a 1,047,576-token context window (~1M tokens), validated with new long-context evaluations such as OpenAI's MRCR (Multi-Round Coreference Resolution) and Graphwalks benchmarks. Post-training emphasised coding (SWE-bench Verified moved to 54.6% from 33% on GPT-4o), instruction following on edge-case formats, and reliable behaviour in long agent loops. OpenAI used reinforcement learning against verifiable rewards and large-scale synthetic data generation to push these axes. The model deprecates GPT-4.5 Preview from the API and is positioned as the production workhorse for ChatGPT Enterprise and Team deployments. Vision input is supported in all three sizes, function calling and Structured Outputs are first-class, and pricing is roughly 26% cheaper than GPT-4o at launch.

Parametri: Undisclosed (estimated multi-hundred billion parameters dense)
Kontekst: 1.047.576 žetonov

Zmožnosti

1,047,576 token context window (~1M tokens)
Major coding improvement: 54.6% on SWE-bench Verified at launch
Strong instruction following on edge-case formats and negative constraints
Reliable behaviour over long agent loops
Vision input across all three model sizes (4.1, mini, nano)
Function calling, parallel tool calls and Structured Outputs
Knowledge cutoff June 2024 (later than GPT-4o)
About 26% cheaper than GPT-4o at launch
Diff-style file editing and applied-diff coding workflows
Improved multilingual non-English benchmark performance
Best for: coding agents, IDE copilots, large-document analysis, production assistants.

Usposabljanje in licenca

Pretrained on a multi-trillion-token web-scale mixture of text, code repositories, books, licensed datasets and image-text pairs. Knowledge cutoff is June 2024. Post-training combined supervised fine-tuning, RLHF and reinforcement learning against verifiable rewards (especially for code).

Licenca: Proprietary commercial license via OpenAI API and Azure OpenAI Service. Not available through the ChatGPT consumer product.

Preizkusi varnosti: Evaluated under OpenAI's Preparedness Framework v2 across CBRN, cyber, persuasion and autonomy axes. External red-teamers and OpenAI's Safety Advisory Group reviewed before launch.

Znane omejitve

API-only, no ChatGPT consumer access initially
1M context window is supported but quality degrades on cross-document recall vs nominal capacity
Higher cost than GPT-4o mini for cost-sensitive use cases
Still hallucinates citations and exact quotes
No native audio I/O (use GPT-4o for voice)

Raziskovalni članki

Cene

Cene v ameriških dolarjih. Uporaba se obračuna iz vnaprej plačanih kreditov.

Vhod	2,40 $ / 1M žetonov
Izhod	9,60 $ / 1M žetonov

Obračunani so žetoni, ki jih vsak zahtevek dejansko porabi.
1 kredit = 0,01 $

Kalkulator stroškov

Kalkulator cen

Vhodnih žetonov

/ zapr.

Izhodnih žetonov

/ zapr.

Zahtevki

Skupaj

0,72 $

72 kreditov

Na zahtevek

0,0072 $ · 0,72 kreditov

Vsak zahtevek se zaokroži navzgor na 0,01 kredita.

API

Pokličite GPT-4.1 s svojim Railwail API ključem. V zahtevku uporabite to ID modela:

gpt-4-1Dokumentacija API Pridobite API ključ

curl https://railwail.com/api/v1/chat/completions \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4-1",
    "messages": [
      {
        "role": "user",
        "content": "Explain what a vector database is in two sentences."
      }
    ],
    "max_tokens": 1024
  }'

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["RAILWAIL_API_KEY"],
    base_url="https://railwail.com/api/v1",
)

completion = client.chat.completions.create(
    model="gpt-4-1",
    messages=[
        {
            "role": "user",
            "content": "Explain what a vector database is in two sentences.",
        },
    ],
    max_tokens=1024,
)

print(completion.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.RAILWAIL_API_KEY,
  baseURL: "https://railwail.com/api/v1",
});

const completion = await client.chat.completions.create({
  model: "gpt-4-1",
  messages: [
    {
      role: "user",
      content: "Explain what a vector database is in two sentences."
    }
  ],
  max_tokens: 1024
});

console.log(completion.choices[0].message.content);

// npm install railwail
import railwail from "railwail";

const rw = railwail(process.env.RAILWAIL_API_KEY);

const res = await rw.chat("gpt-4-1", [
  { role: "user", content: "Explain what a vector database is in two sentences." },
], { max_tokens: 1024 });

console.log(res.choices[0].message.content);

Nastavite ključ kot RAILWAIL_API_KEYUstvari API ključ

Specifikacije

ID modela: gpt-4-1
Razvijalec: OpenAI
Kategorija: Besedilo in klepet
Vhod: Besedilo
Izhod: Besedilo
Kontekstno okno: 1.000.000 žetonov
Maks. izhod: 32.768 žetonov
Obračunavanje: Po porabi (žetoni ali čas GPU)
Velikost modela: Undisclosed (estimated multi-hundred billion parameters dense)
Licenca: Proprietary commercial license via OpenAI API and Azure OpenAI Service. Not available through the ChatGPT consumer product.
Kataložni vnos posodobljen: 23. september 2026

Oznake

popular
coding
reasoning

Primeri pozivov

Primeri iz kataloga Railwail. Niso bili generirani v živo na tej strani.

System Design
Design a URL shortener service. What are the key components and how would you handle 10 million requests per day?
Prikaži primer odgovora
A URL shortener at 10M req/day needs: 1) An API layer behind a load balancer to accept long URLs and return short codes. 2) A base62 encoding scheme (a-z, A-Z, 0-9) generating 6-character codes, yielding 56 billion unique URLs. 3) A distributed key-value store like Redis for fast lookups with a persistent database (PostgreSQL) as the source of truth. 4) A caching layer (CDN + Redis) since reads vastly outnumber writes. 5) Rate limiting per IP/API key to prevent abuse. At ~115 req/sec average, a few application servers with horizontal scaling can handle the load comfortably.
Instruction Following
Write exactly 3 sentences about black holes. Each sentence must contain exactly 10 words. Do not use the word 'space'.
Prikaži primer odgovora
Black holes form when massive stars collapse under their gravity. Light cannot escape the intense gravitational pull they create. Scientists study these mysterious objects using powerful telescopes and math.

Primeri uporabe

Kaj se uporablja za

Autonomous coding agents
IDE copilots and pair programmers
Long-document and codebase analysis
Customer support over 1M token transcripts
Enterprise RAG and chat assistants
Tool-using agents in production

Povezani vodniki

Best Large Language Models

Vsi modeli v Besedilo in klepet

Pogosta vprašanja

Kaj je GPT-4.1?

GPT-4.1 je model podjetja OpenAI iz kategorije Besedilo in klepet. Na Railwailu ga lahko pokličete z ključem API prek Railwailovega API-ja.

Koliko stane GPT-4.1 na Railwailu?

Na Railwail stane GPT-4.1 2,40 $ na 1M vhodnih žetonov in 9,60 $ na 1M izhodnih žetonov. Zaračunano vam je tisto, kar vsaka zahteva dejansko porabi. Uporaba se plača s predplačanimi krediti; 1 kredit je enak 0,01 $.

Kako veliko je kontekstno okno GPT-4.1?

Kontekstno okno GPT-4.1 vsebuje 1.000.000 žetonov. Odgovor je lahko dolg do 32.768 žetonov.

Kako hiter je GPT-4.1?

Za GPT-4.1 je na Railwailu še premalo izmerjenih zagonov, da bi navedli čas izvajanja. Odvisno je od vnosa, nastavitev in obremenitve pri ponudniku.

Je GPT-4.1 boljši od Claude Fable 5.1?

To je odvisno od naloge. GPT-4.1 (OpenAI) in Claude Fable 5.1 (Anthropic) sta oba modela iz kategorije Besedilo in klepet. Stran za primerjavo prikazuje njune cene in specifikacije drug ob drugem.

Primerjaj GPT-4.1 in Claude Fable 5.1

Kako uporabljam GPT-4.1 prek API-ja?

Ustvarite ključ Railwailovega API-ja in pošljite zahtevo z ID-jem modela gpt-4-1. Primeri kode za curl, Python in JavaScript so v razdelku API na tej strani.

Primerljivi modeli

Vsi v tej kategoriji

Claude Fable 5.1Anthropic
Anthropic's model for the most demanding reasoning and long-horizon agentic work. 1M-token context window, up to 128K output tokens, adaptive thinking that is always on.
12,00 $/1M vhod
400 % dražje na enoto
Primerjaj GPT-4.1 in Claude Fable 5.1
Claude Opus 4.8Anthropic
The most capable model of Anthropic's Opus 4 series. State of the art on long-horizon agentic work, coding and knowledge tasks, with a 1M-token context window at standard pricing.
6,00 $/1M vhod
150 % dražje na enoto
Primerjaj GPT-4.1 in Claude Opus 4.8
Claude Opus 5.5Anthropic
Anthropic's current Opus model for long-running agentic coding and knowledge work. 1M-token context window, up to 128K output tokens, adaptive thinking that is always on.
4,80 $/1M vhod
100 % dražje na enoto
Primerjaj GPT-4.1 in Claude Opus 5.5

Uporabite GPT-4.1 prek API

En API ključ za vsak model na Railwail. Uporaba se obračuna iz vnaprej plačanih kreditov, 1 kredit = 0,01 $.

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