GPT-4.1
Snapshot gpt-4.1-2025-04-14. gpt-4.1-mini ($0.40/$1.60) still listed; gpt-4.1-nano deprecated, shutdown Oct 23 2026.
- Context window
- 1,047,576 tokens
- Max output
- 32,768 tokens
- Knowledge cutoff
- 2024-06
- Input
- text, image
- Output
- text
- License
- proprietary
- Pricing
- input: $2 · cached input: $0.5 · output: $8 (per 1M tokens (USD), standard tier) source
- Verified
- 2026-09-29
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| OpenAI API | gpt-4.1 | https://api.openai.com/v1/chat/completions | docs |
| Azure OpenAI (Microsoft Foundry) | gpt-4.1 | — | docs |
| OpenRouter | openai/gpt-4.1 | openrouter.ai/openai/gpt-4.1 | — |
Notable capabilities (2)
- 1M-token non-reasoning model: ~1M-token context without reasoning tokens; strong instruction following and tool calling. source
- Fine-tunable: Supports fine-tuning, unlike the GPT-5.x models. source
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:
Other OpenAI models
GPT-6.1 Sol · GPT-6 Luna · GPT-6 Sol · GPT Image 2.5 Flare · GPT Image 2.5 Sunburst · GPT-6 Astra · GPT-Live-Transcribe · GPT-Transcribe · GPT-5.6 Terra · GPT-Live 1 · GPT-Realtime-2.1 · GPT-Realtime-2 · GPT-Realtime-Translate · GPT-Rosalind · GPT-Audio-1.5 (and gpt-audio / gpt-audio-mini) · GPT-5.3-Codex · gpt-oss-120b · gpt-oss-20b · GPT-4o mini TTS · text-embedding-3-large · text-embedding-3-small · GPT-5.6 Luna · GPT-5.6 Sol · GPT-Realtime-Whisper · GPT-5.5 Pro · GPT-5.5 · GPT Image 2 · GPT-5.4 · GPT-Realtime-1.5 · GPT-4o · TTS-1 / TTS-1 HD · Whisper large-v3 / large-v3-turbo (open weights) · GPT-Realtime and GPT-Realtime mini · o3 · GPT-4o Transcribe / Mini Transcribe / Transcribe Diarize · Whisper (whisper-1 API) · Sora 2