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AI Atlas
ModelActiveProprietary

gpt-5.4-nano

OpenAIdevelopers.openai.com/api/docs/models/gpt-5.4-na

Our cheapest GPT-5.4-class model for simple high-volume tasks

quality72

Updated 18 min ago · first seen 11 Sept 2026

model_01M293V77A1BSM71074DSXFKAD

Context
400K tokens
T2 · 18 min ago
Released
17 Mar 2026
T2 · 18 min ago
Knowledge cutoff
Aug 2025
T2 · 18 min ago

Specification

Release date
17 Mar 2026

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Openness
proprietary

Source:OpenAI Platform docsT1observed 37 min agohigh

Context window
400K tokens

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Max output
128K tokens

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Knowledge cutoff
Aug 2025

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Modalities
image, text

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Input modalities
image, text

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Output modalities
text

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Tokenizer
GPT

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

API model id
gpt-5.4-nano

Source:OpenAI Platform docsT1observed 37 min agohigh

Official page

Source:OpenAI Platform docsT1observed 37 min agohigh

File input
Yes

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Openrouter id
openai/gpt-5.4-nano

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Supported parameters
include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools

Source:OpenRouter public model & pricing listingT2observed 18 min agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

19

Source tiers

T1T24 / 15

Freshest observation

18 min ago

Conflicts

None