GPT-4.1

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

Tekst og chatNyTilgjengelig

av OpenAIgpt-4-1

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

Prøv det Få API-nøkkel Sammenlign

Pris · 1M inn/ut: 2,40 USD / 9,60 USD
Kontekst: 1 000 000 tokens
Maks. utdata: 32 768 tokens
Input → output: Tekst → Tekst
Utvikler: OpenAI
Oppdatert: 23. september 2026

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Prøv GPT-4.1

Chat

2,40 USD/1M inn

Send en melding. Svaret kommer fullstendig når modellen er ferdig (ingen streaming).

Systemprompt

Maks. svarslengde (tokens)

⌘/Ctrl + Enter

Denne kjøringen

maksimalt 0,0099 USD · 0,99 credits reservert

Fakturert etter faktisk brukte tokens; ubrukt del av reservasjonen refunderes.

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10 gratis credits (0,10 USD) når du registrerer deg med Google

Kan brukes 24 timer etter registrering, opptil 5 kjøringer per dag og maksimalt 2 credits per kjøring. Andre påloggingsmetoder starter uten credits. Nok for 10 kjøringer av denne modellen.

Om GPT-4.1

Kort sagtPer 23. september 2026

GPT-4.1 er en modell fra OpenAI i kategorien Tekst og chat. På Railwail koster GPT-4.1 2,40 USD per 1M inndatatokens og 9,60 USD per 1M utdatatokens. Kontekstvinduet inneholder 1 000 000 tokens, og ett svar kan være opptil 32 768 tokens langt.

Bakgrunn

Om OpenAI

Grunnlagt 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.

Besøk OpenAI

Arkitektur

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.

Parametere: Undisclosed (estimated multi-hundred billion parameters dense)
Kontekst: 1 047 576 tokens

Evner

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.

Trening og lisens

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).

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

Sikkerhetstesting: 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.

Kjente begrensninger

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)

Forskningsartikler

Priser

Priser i amerikanske dollar. Bruk belastes fra forhåndsbetalt kreditt.

Inndata	2,40 USD / 1M tokener
Utdata	9,60 USD / 1M tokener

Faktureres etter tokenene som hver forespørsel faktisk bruker.
1 kreditt = 0,01 USD

Kostnadsberegner

Prisberegner

Input-tokens

/ forespørsel

Output-tokens

/ forespørsel

Forespørsler

Totalt

0,72 USD

72 credits

Per forespørsel

0,0072 USD · 0,72 credits

Hver forespørsel rundes opp til 0,01 credits.

API

Ring GPT-4.1 med din Railwail API-nøkkel. Bruk denne modell-IDen i forespørselen:

gpt-4-1API-dokumentasjon Få en API-nøkkel

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);

Sett nøkkelen din som RAILWAIL_API_KEYOpprett API-nøkkel

Spesifikasjoner

Modell-ID: gpt-4-1
Utvikler: OpenAI
Kategori: Tekst og chat
Inndata: Tekst
Utdata: Tekst
Kontekstvindu: 1 000 000 tokens
Maks. utdata: 32 768 tokens
Fakturering: Etter bruk (tokens eller GPU-tid)
Modellstørrelse: Undisclosed (estimated multi-hundred billion parameters dense)
Lisens: Proprietary commercial license via OpenAI API and Azure OpenAI Service. Not available through the ChatGPT consumer product.
Katalogoppføring oppdatert: 23. september 2026

Merkelapper

popular
coding
reasoning

Eksempelprompts

Eksempler fra Railwail-katalogen. De ble ikke generert live på denne siden.

System Design
Design a URL shortener service. What are the key components and how would you handle 10 million requests per day?
Vis eksempelsvar
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'.
Vis eksempelsvar
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.

Brukstilfeller

Hva det brukes til

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

Relaterte veiledninger

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Ofte stilte spørsmål

Hva er GPT-4.1?

GPT-4.1 er en modell fra OpenAI i kategorien Tekst og chat. På Railwail kan du kalle den med en API-nøkkel gjennom Railwail API.

Hvor mye koster GPT-4.1 på Railwail?

På Railwail koster GPT-4.1 2,40 USD per 1M inndatatokens og 9,60 USD per 1M utdatatokens. Du betaler for det hver forespørsel faktisk bruker. Bruk betales fra forhåndskjøpte kreditter; 1 kreditt tilsvarer 0,01 USD.

Hvor stort er kontekstvinduet til GPT-4.1?

Kontekstvinduet til GPT-4.1 inneholder 1 000 000 tokens. Ett svar kan være opptil 32 768 tokens langt.

Hvor rask er GPT-4.1?

Det finnes ennå ikke nok målte kjøringer av GPT-4.1 på Railwail til å angi en kjøretid. Det avhenger av inndataene, innstillingene og belastningen hos leverandøren.

Er GPT-4.1 bedre enn Claude Fable 5.1?

Det avhenger av oppgaven. GPT-4.1 (OpenAI) og Claude Fable 5.1 (Anthropic) er begge modeller i kategorien Tekst og chat. Sammenligningssiden viser prisene og spesifikasjonene deres side ved side.

Sammenlign GPT-4.1 og Claude Fable 5.1

Hvordan bruker jeg GPT-4.1 gjennom API-en?

Opprett en Railwail API-nøkkel og send forespørselen din med modell-ID-en gpt-4-1. Kodeeksempler for curl, Python og JavaScript finnes i API-delen av denne siden.

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Bruk GPT-4.1 via APIen

Én API-nøkkel for alle modeller på Railwail. Bruk belastes fra forhåndsbetalt kreditt, 1 kreditt = 0,01 USD.

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