Model Tracker
GPT-4.1 nano
GPT-4.1 nano is an AI model made by OpenAI. OpenAI released it on 14 April 2025. It is deprecated. It takes text, image and returns text.
In inglese
GPT-4.1 nano is an AI model made by OpenAI. OpenAI released it on 14 April 2025. It is deprecated. It takes text, image and returns text. Its context window is 1,047,576 tokens. Its longest answer is 32,768 tokens. Through the API it costs $0.10 per 1M tokens for input and $0.40 per 1M tokens for output. Its knowledge cutoff is June 2024.
- Released
- 14 April 2025 — openai.com, read 16 October 2026
- Status
- Deprecated — developers.openai.com, read 16 October 2026
- Takes
- Text, Image — developers.openai.com, read 16 October 2026
- Returns
- Text — developers.openai.com, read 16 October 2026
- Open weights
- Not confirmed: The maker's consulted pages do not state whether GPT-4.1 nano has open weights.
- Licence
- Not confirmed: The maker's consulted pages do not publish a licence name for GPT-4.1 nano.
- Context window
- 1,047,576 tokens — developers.openai.com, read 16 October 2026
- Longest answer
- 32,768 tokens — developers.openai.com, read 16 October 2026
- Knowledge cutoff
- June 2024 — developers.openai.com, read 16 October 2026
- API price, input
- $0.10 per 1M tokens — developers.openai.com, read 16 October 2026
- API price, output
- $0.40 per 1M tokens — developers.openai.com, read 16 October 2026
- Where
- API — developers.openai.com, read 16 October 2026
- Parameters
- Not confirmed: The maker's consulted pages do not publish a parameter count for GPT-4.1 nano.
- Model card
- Not confirmed: I found the maker's API model documentation, but no page explicitly identified by the maker as a model card or system card for GPT-4.1 nano.
Benchmarks
Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.
Arena
- Text Arena, gpt-4.1-nano-2025-04-14: 1,322 (1,315–1,330, 6,103 votes), published 15 October 2026
- Vision Arena, gpt-4.1-nano-2025-04-14: 1,089 (1,070–1,107, 1,211 votes), published 9 October 2026
Arena’s leaderboard dataset (lmarena-ai/leaderboard-dataset on Hugging Face), CC BY 4.0: ratings from people’s votes between two anonymous models, as Arena publishes them. Data · CC BY 4.0
Epoch AI
- Epoch Capabilities Index, GPT-4.1 nano: 129.6 (123.5–132.1), as of 19 October 2026
- GPQA Diamond, gpt-4.1-nano-2025-04-14: 48.9% (± 2.5), run 14 April 2025
- OTIS Mock AIME 2024–2025, gpt-4.1-nano-2025-04-14: 28.9% (± 6.0), run 14 April 2025
- SimpleQA Verified, gpt-4.1-nano-2025-04-14: 6.0% (± 0.8), run 31 August 2026
Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0
Questions
When was GPT-4.1 nano released?
OpenAI released GPT-4.1 nano on 14 April 2025.
Is GPT-4.1 nano still available?
It is deprecated: OpenAI has announced the date it will retire it.
What is the context window of GPT-4.1 nano?
The context window of GPT-4.1 nano is 1,047,576 tokens, as OpenAI prints it.
How much does the GPT-4.1 nano API cost?
On the standard tier, GPT-4.1 nano costs $0.10 per 1M tokens for input and $0.40 per 1M tokens for output, as OpenAI lists it.
What does GPT-4.1 nano take and return?
GPT-4.1 nano takes text, image and returns text.
What is the knowledge cutoff of GPT-4.1 nano?
The knowledge cutoff of GPT-4.1 nano is June 2024.
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Sources
- GPT-4.1 nano Model | OpenAI API (read 16 October 2026)
- Introducing GPT-4.1 in the API (read 16 October 2026)
- Create chat completion | OpenAI API Reference (read 16 October 2026)