Model Tracker
GPT-5.4 nano
GPT-5.4 nano is an AI model made by OpenAI. OpenAI released it on 17 March 2026. It is deprecated. It takes text, image and returns text.
GPT-5.4 nano is an AI model made by OpenAI. OpenAI released it on 17 March 2026. It is deprecated. It takes text, image and returns text. Its context window is 400,000 tokens. Its longest answer is 128,000 tokens. Through the API it costs $0.20 per 1M tokens for input and $1.25 per 1M tokens for output. Its knowledge cutoff is 31 August 2025.
- Released
- 17 March 2026 — developers.openai.com, read 19 October 2026
- Status
- Deprecated — developers.openai.com, read 19 October 2026
- Takes
- Text, Image — developers.openai.com, read 19 October 2026
- Returns
- Text — developers.openai.com, read 19 October 2026
- Open weights
- Not confirmed: The maker's pages reviewed do not state whether GPT-5.4 nano has open weights.
- Licence
- Not confirmed: The maker's pages reviewed do not state a licence for GPT-5.4 nano.
- Context window
- 400,000 tokens — developers.openai.com, read 19 October 2026
- Longest answer
- 128,000 tokens — developers.openai.com, read 19 October 2026
- Knowledge cutoff
- 31 August 2025 — developers.openai.com, read 19 October 2026
- API price, input
- $0.20 per 1M tokens — developers.openai.com, read 19 October 2026
- API price, output
- $1.25 per 1M tokens — developers.openai.com, read 19 October 2026
- Where
- API — openai.com, read 19 October 2026
- Parameters
- Not confirmed: The maker's pages reviewed do not publish a parameter count for GPT-5.4 nano.
- Model card
- Not confirmed: The maker's pages reviewed do not provide a model card or system card for GPT-5.4 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-5.4-nano-high: 1,401 (1,397–1,405, 62,396 votes), published 15 October 2026
- Vision Arena, gpt-5.4-nano-high: 1,199 (1,193–1,206, 25,650 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-5.4 Nano: 146.1 (143.6–148.5), as of 19 October 2026
- GPQA Diamond, gpt-5.4-nano-2026-03-17_high: 78.5% (± 2.4), run 14 April 2026
- GPQA Diamond, gpt-5.4-nano-2026-03-17_low: 72.2% (± 3.2), run 7 August 2026
- GPQA Diamond, gpt-5.4-nano-2026-03-17_none: 55.6% (± 3.5), run 7 August 2026
- FrontierMath, tiers 1–3, gpt-5.4-nano-2026-03-17_high: 44.9% (± 3.0), run 12 June 2026
- FrontierMath, tiers 1–3, gpt-5.4-nano-2026-03-17_low: 20.4% (± 2.4), run 28 August 2026
- FrontierMath, tiers 1–3, gpt-5.4-nano-2026-03-17_none: 4.6% (± 1.2), run 28 August 2026
- FrontierMath, tier 4, gpt-5.4-nano-2026-03-17_high: 12.2% (± 5.2), run 12 June 2026
- OTIS Mock AIME 2024–2025, gpt-5.4-nano-2026-03-17_high: 87.8% (± 3.9), run 14 April 2026
- OTIS Mock AIME 2024–2025, gpt-5.4-nano-2026-03-17_low: 68.9% (± 7.0), run 7 August 2026
- OTIS Mock AIME 2024–2025, gpt-5.4-nano-2026-03-17_none: 46.7% (± 7.5), run 7 August 2026
- SimpleQA Verified, gpt-5.4-nano-2026-03-17_high: 11.7% (± 1.0), run 27 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-5.4 nano released?
OpenAI released GPT-5.4 nano on 17 March 2026.
Is GPT-5.4 nano still available?
It is deprecated: OpenAI has announced the date it will retire it.
What is the context window of GPT-5.4 nano?
The context window of GPT-5.4 nano is 400,000 tokens, as OpenAI prints it.
How much does the GPT-5.4 nano API cost?
On the standard tier, GPT-5.4 nano costs $0.20 per 1M tokens for input and $1.25 per 1M tokens for output, as OpenAI lists it.
What does GPT-5.4 nano take and return?
GPT-5.4 nano takes text, image and returns text.
What is the knowledge cutoff of GPT-5.4 nano?
The knowledge cutoff of GPT-5.4 nano is 31 August 2025.
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Sources
- GPT-5.4 nano Model | OpenAI API (read 19 October 2026)
- Changelog | OpenAI API (read 19 October 2026)
- Deprecations | OpenAI API (read 19 October 2026)
- Introducing GPT-5.4 mini and nano (read 19 October 2026)