OpenAI · Released Apr 14, 2025GPT-4.1 nano
Tiny GPT-4.1 option for classification, routing, and very high-volume tasks.
- Capability
- 129.6ECI · #127 of 148
- Input
- $0.10per 1M tokens
- Output
- $0.40per 1M tokens
- Context
- 1.05M33K max output
What it costs
- Input
- $0.10per million tokens
- Output
- $0.40per million tokens
- Cached input
- $0.025per million tokens
- Blended (3:1)
- $0.175cheaper than 79% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $0.40 |
| Team assistant25M input + 5M output tokens | $4.50 |
| Production app250M input + 50M output tokens | $45.00 |
Official OpenAI API price, as listed on models.dev.
Independent benchmarks
#127 of 148 scored models
The shaded band is Epoch AI’s confidence range (123.2–132.0); the tick marks the median scored model.
Scores from Epoch AI, run independently of OpenAI.
The details
- Lab
- OpenAI
- Released
- Apr 14, 2025
- Knowledge cutoff
- Apr 2024
- Context window
- 1,047,576 tokens
- Max output
- 32,768 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- No
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Proprietary
- API model ID
gpt-4.1-nanoon OpenAI- Availability
- 20 API providerslisted on models.dev
- Status
- Deprecated by the provider
What OpenAI claims
Published by the lab at launch. Settings vary, so compare these only with care.
| Benchmark | Score | Setting | Source |
|---|---|---|---|
| Aider Polyglot | 8.9 percent correct | — | Source |
More from OpenAI
About GPT-4.1 nano
How much does GPT-4.1 nano cost?
GPT-4.1 nano costs $0.10 input / $0.40 output per million tokens (official OpenAI API price). Cached input is $0.025 per million tokens. At a 3:1 input-to-output mix that is $0.175 per million tokens, cheaper than 79% of the 360 priced models we track.
What is the context window of GPT-4.1 nano?
GPT-4.1 nano accepts up to 1,047,576 tokens per request and can write up to 32,768 tokens in one response.
How good is GPT-4.1 nano?
Epoch AI gives GPT-4.1 nano a Capabilities Index score of 129.6 (likely range 123.2–132.0), ranking it #127 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 48.9%, OTIS Mock AIME 2024–2025 28.9%, SimpleQA Verified 6.0%.
Is GPT-4.1 nano open source?
No. GPT-4.1 nano is proprietary; you use it through OpenAI’s API or partner platforms.
What inputs does GPT-4.1 nano support?
GPT-4.1 nano accepts text and images and replies in text. It is not a dedicated reasoning model, supports tool calling and can return structured JSON output.
When was GPT-4.1 nano released?
OpenAI released GPT-4.1 nano on Apr 14, 2025. Its training data runs to Apr 2024.
What are the best alternatives to GPT-4.1 nano?
The closest current models from other labs on capability, price and release date are Gemma 3 27B IT (Google, ECI 130.0, $0.08 / $0.20), Llama 4 Scout 17B Instruct (Meta, ECI 129.7, $0.225 / $0.69), Mistral Small 3.2 (Mistral AI, ECI 131.7, $0.10 / $0.30) and Qwen3 30B A3B (Alibaba (Qwen), ECI 136.2, $0.114 / $0.50).