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AI models

openai

GPT-4.1 nano

AI model Released Apr 14, 2025

API mode: Chat^*
Context window: 1,047,576 tokens
Maximum output: 32,768 tokens
Open weights: No

Capability & preference

General capability · ECI

A cross-benchmark capability estimate. Index points, not a percentage; intervals show uncertainty.

GPT-4.1 nano 127.0^* GPT-4.1 nano · 95% interval 123.9–129.7

Model performance

Radar task score: four tests, equal weight. An experimental summary of these tasks, not a universal intelligence rating.

GPT-4.1 nano

Tested configuration Radar task score

Unrated

2/4 core tests · not enough evidence

2 benchmark results for this configuration

Scientific reasoning

GPQA Diamond · 25%

Expert-written science questions; strict multiple-choice scoring. Chance accuracy is 25%.

GPT-4.1 nano 48.9^*% Approx. 95% interval: 44.1–53.8% · 2025-04-14 · Older result

Novel problem solving

Mystery Game Puzzles · 25%

Best-next-move puzzles in an undisclosed game variant. A narrow reasoning test, not general intelligence.

GPT-4.1 nano Not available

Advanced mathematics

FrontierMath Tiers 1-3 · 25%

Private v2 mathematics problems with Python tools. Earlier versions and Tier 4 are excluded.

GPT-4.1 nano Not available

Factual answers

SimpleQA Verified · 25%

Correct factual answers under a guessing prompt, graded by a model. Not a hallucination or abstention score.

GPT-4.1 nano 6.0^*% Approx. 95% interval: 4.5–7.5% · 2026-08-31

Bars show reported task scores. Whiskers are approximate 95% intervals where standard errors are available. Different reasoning budgets are not equal-cost tests. Missing results are never zero.

Run it locally

Inference · memory estimate

GPT-4.1 nano

Closed weights. No supported local deployment or GPU requirement is published.

API cost

USD / month

Input tokens / monthOutput tokens / month

Standard text-token estimate. Excludes taxes, caching, batch discounts, reasoning and multimodal surcharges. Provider limits and regional availability may differ.

GPT-4.1 nano

Provider offer

Capabilities

Context window: 1,047,576 tokens
Maximum input: 1,047,576 tokens^*
Maximum output: 32,768 tokens
Reasoning: No
Tool calling: Yes
Structured output: Yes^*
Open weights: No
Knowledge cutoff: 2024-04
API mode: Chat^*
Image input: Yes^*
PDF input: Yes^*
Parallel tool calls: Yes^*
Prompt caching: Yes^*
System messages: Yes^*
Tool choice: Yes^*

Input modalities

text
image

Output modalities

text

System configuration

Detailed specifications

Specifications · 26 fields

cache read input token cost

2.5e-8^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

cache read input token cost priority

5.0e-8^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

deprecation date

2026-10-23^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

input cost per token

1.0e-7^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

input cost per token batches

5.0e-8^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

input cost per token priority

2.0e-7^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

litellm provider

openai^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

max input tokens

1,047,576^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

max output tokens

32,768^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

max tokens

32,768^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

mode

chat^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

output cost per token

4.0e-7^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

output cost per token batches

2.0e-7^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

output cost per token priority

8.0e-7^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supported endpoints

/v1/chat/completions^*
/v1/batch^*
/v1/responses^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supported modalities

text^*
image^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supported output modalities

text^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports function calling

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports native streaming

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports parallel function calling

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports pdf input

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports prompt caching

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports response schema

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports system messages

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports tool choice

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

supports vision

Yes^*

Scope and conditions

native_context

provider: openai^*
mode: chat^*
full_native_model_id: gpt-4.1-nano^*
pricing_scope: Literal source field names and values retained; provider, region, cache/batch/threshold conditions and per-unit meaning must be checked. max_tokens is not automatically a context limit.^*

* Provisional data