AI model comparison
GPT-5 Nano vs GPT-4.1 Nano
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
OpenAI
GPT-5 Nano
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments.
- Input / 1M
- $0.05
- Output / 1M
- $0.40
- Context
- 400K
OpenAI
GPT-4.1 Nano
For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series.
- Input / 1M
- $0.10
- Output / 1M
- $0.40
- Context
- 1.05M
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
GPT-5 Nano
1.3x cheaper for a typical chat
Higher intelligence score
GPT-5 Nano
13 vs 7.8 on Artificial Analysis
Larger context window
GPT-4.1 Nano
1.05M vs 400K tokens
Newer release
GPT-5 Nano
Released August 7, 2025
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
GPT-5 Nano13GPT-4.1 Nano7.8Coding index
GPT-5 NanoNot availableGPT-4.1 Nano11.1Agentic index
GPT-5 NanoNot availableGPT-4.1 NanoNot availablePricing
GPT-5 Nano vs GPT-4.1 Nano API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | GPT-5 Nano | GPT-4.1 Nano |
|---|---|---|
| Input tokensPer 1M tokens | $0.05 | $0.10 |
| Output tokensPer 1M tokens | $0.40 | $0.40 |
| Cached input (read)Per 1M tokens | $0.01 | $0.03 |
| Cache writePer 1M tokens | Not available | Not available |
| Web searchPer request | $0.01 | $0.01 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
GPT-5 Nano$0.30GPT-4.1 Nano$0.40Coding task
30K in, 4K out
GPT-5 Nano$3.10$1.75 cachedGPT-4.1 Nano$4.60$2.35 cachedLong document summary
150K in, 2K out
GPT-5 Nano$8.30$1.55 cachedGPT-4.1 Nano$15.80$4.55 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | GPT-5 Nano | GPT-4.1 Nano |
|---|---|---|
| Context window | 400K tokens | 1.05M tokens |
| Max output | 128K tokens | 33K tokens |
| Input types | File, Image, Text | File, Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | High, Medium, Low, Minimal | Not available |
| Default reasoning effort | Medium | Not available |
| Release date | August 7, 2025 | April 14, 2025 |
Features
Supported features
API features available for each model.
| Metric | GPT-5 Nano | GPT-4.1 Nano |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Not supported |
| Temperature | Not supported | Supported |
| Stop sequences | Not supported | Not supported |
| Deterministic seed | Supported | Supported |
| Verbosity control | Supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
GPT-5 NanoView full model details- GPT-5 Nano vs Gemini 2.5 Flash Lite
- GPT-5 Nano vs GPT-6 Luna Pro
- GPT-5 Nano vs gpt-oss-120b
- GPT-5 Nano vs Gemma 4 31B
- GPT-5 Nano vs Gemma 4 26B A4B
- GPT-5 Nano vs gpt-oss-20b
- GPT-5 Nano vs GPT-4o-mini
- GPT-5 Nano vs Qwen3 235B A22B Instruct 2507
- GPT-5 Nano vs DeepSeek V3.1
- GPT-5 Nano vs Mercury 2.5
- GPT-5 Nano vs Qwen3.5-9B
- GPT-5 Nano vs Nemotron 3.5 Lightning
- GPT-5 Nano vs Granite 4.2 8B
- GPT-5 Nano vs GLM 4.7 Flash
- GPT-5 Nano vs DeepSeek V3.2 Exp
- GPT-5 Nano vs Nemotron 3 Super
- GPT-5 Nano vs Mistral Small 4
- GPT-5 Nano vs Step 3.5 Flash
- GPT-5 Nano vs Mercury 2
GPT-4.1 NanoView full model details- GPT-4.1 Nano vs Gemini 2.5 Flash Lite
- GPT-4.1 Nano vs GPT-6 Luna Pro
- GPT-4.1 Nano vs gpt-oss-120b
- GPT-4.1 Nano vs gpt-oss-20b
- GPT-4.1 Nano vs GPT-4o-mini
- GPT-4.1 Nano vs Gemma 3 27B
- GPT-4.1 Nano vs Qwen3 30B A3B Instruct 2507
- GPT-4.1 Nano vs Llama 3.3 70B Instruct
- GPT-4.1 Nano vs Llama 4 Scout
- GPT-4.1 Nano vs Qwen3 VL 30B A3B Instruct
- GPT-4.1 Nano vs Nemotron 3 Nano 30B A3B
- GPT-4.1 Nano vs Qwen2.5 72B Instruct
- GPT-4.1 Nano vs Solar Pro 3
- GPT-4.1 Nano vs Qwen3 30B A3B
- GPT-4.1 Nano vs Nova Lite 1.0
- GPT-4.1 Nano vs Llama 3.1 70B Instruct
- GPT-4.1 Nano vs Llama 3.2 3B Instruct
- GPT-4.1 Nano vs GPT-3.5 Turbo
Our take
GPT-5 Nano is 1.3x cheaper for a typical chat. GPT-5 Nano scores higher on the Artificial Analysis Intelligence Index (13 vs 7.8). GPT-4.1 Nano has the larger context window (1.05M vs 400K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is GPT-5 Nano or GPT-4.1 Nano cheaper?
GPT-5 Nano is cheaper for a typical chat (2K input tokens and 500 output tokens). GPT-5 Nano costs $0.05 per 1M input tokens and $0.40 per 1M output tokens, while GPT-4.1 Nano costs $0.10 per 1M input tokens and $0.40 per 1M output tokens.
Which has a bigger context window, GPT-5 Nano or GPT-4.1 Nano?
GPT-4.1 Nano supports up to 1.05M tokens of context, compared with 400K for GPT-5 Nano.
Is GPT-5 Nano smarter than GPT-4.1 Nano?
On the Artificial Analysis Intelligence Index, GPT-5 Nano scores 13 and GPT-4.1 Nano scores 7.8, putting GPT-5 Nano ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use GPT-5 Nano and GPT-4.1 Nano at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see GPT-5 Nano and GPT-4.1 Nano answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to GPT-5 Nano and GPT-4.1 Nano at the same time. Compare the answers side by side and keep the best one.