Post-Cutoff

OpenAIDeprecatedLanguage modelReleased 14 Apr 2025

GPT-4.1

Model idgpt-4.1

Price$2 in, $8 out per 1M tokens

Checked24 October 2026

Knows up to June 2024

2,060events after its cutoff

98 historic, 490 major. 866 days of news.

It launched on 14 April 2025, already missing 34 of them. Coverage before 2026 is thin (34 entries for 2024 and 80 for 2025), so this count is a floor.

Its cutoff, June 2024, is before this chart starts: every mark here is news it has never seen.

How to call it

3 ways to use GPT-4.1, with the model id each provider expects.

Providers, model ids, endpoints and docs for GPT-4.1
ProviderModel idEndpointDocs
OpenAI API gpt-4.1 https://api.openai.com/v1/chat/completions developers.openai.com
Azure OpenAI (Microsoft Foundry) gpt-4.1 learn.microsoft.com
OpenRouter openai/gpt-4.1 openrouter.ai

Pricing

Prices for GPT-4.1
Input$2 per 1M tokens
Cached input$0.50 per 1M tokens
Output$8 per 1M tokens

As published: “per 1M tokens (USD), standard tier”.

Source: developers.openai.com, checked 24 October 2026.

Specs

Input
Text and images
Output
Text
Context window
1,047,576 tokens
Max output
32,768 tokens
Open weights
No
Licence
Proprietary
Training cutoff
June 2024
Released
14 April 2025
Status
Deprecated
Type
Language model

What stands out

What its maker marketed at launch, and what people found later, each with its source.

Four assistants, one scale

GPT-4.1 is added as a fifth row. Each row runs from what the model knows (graphite) through the months between its cutoff and its launch (hatched) to today (pink).

  1. GPT-6 Astra 271 at launch, 1,863 today
  2. Claude Opus 5.5 372 at launch, 1,795 today
  3. Gemini 4 Hydrogen 1,863 at launch, 1,889 today
  4. Grok 4.7 387 at launch, 1,829 today
  5. GPT-4.1 34 at launch, 2,060 today
Show as a table
ModelCutoffReleasedMissing at launchMissing today
GPT-6 AstraApril 20263 September 20262711,863
Claude Opus 5.5June 202622 September 20263721,795
Gemini 4 HydrogenMarch 202612 November 20261,8631,889
Grok 4.7May 202621 September 20263871,829
GPT-4.1June 202414 April 2025342,060

Notes

Snapshot gpt-4.1-2025-04-14. gpt-4.1-nano was shut down on Oct 23 2026 (deprecations page, checked 2026-10-24; replacement gpt-5.6-luna). On 2026-10-14 OpenAI deprecated gpt-4.1-2025-04-14 and gpt-4.1-mini-2025-04-14 (gpt-4.1-mini was $0.40/$1.60): shutdown Jan 14 2027, replacement gpt-6-luna; fine-tunes follow their base model.

curl https://api.openai.com/v1/responses \
 -H "Authorization: Bearer $OPENAI_API_KEY" -H "Content-Type: application/json" \
 -d '{"model":"gpt-4.1","input":"Hello"}'

Sources: