When was GPT-5.4 released?

GPT-5.4 was released by OpenAI on Thursday, Mar 5 2026.

GPT-5.4 was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

How much does GPT-5.4 cost?

GPT-5.4 costs $2.50 per million input tokens and $15.00 per million output tokens through the OpenAI API. Cached input is $0.25 per million tokens. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.

What benchmark scores did GPT-5.4 get?

GPT-5.4 reports 15 tracked benchmark scores — BullshitBench v2: 48%; ProgramBench: 0%; Next.js Evals: 65%; Terminal-Bench 2.0: 75.1%; Expert-SWE (Internal): 68.5%; Toolathlon: 54.6%; BrowseComp: 82.7%; CyberGym: 79%; Humanity's Last Exam (with tools): 52.1%; ARC-AGI-2: 73.95%; FrontierMath (Tier 1–3): 47.6%; FrontierMath (Tier 4): 27.1%; GPQA Diamond: 92.8%; OSWorld-Verified: 75%; GDPval (win/tie rate): 83%. Scores are the figures published at release by OpenAI.

Is GPT-5.4 open source?

No. GPT-5.4 is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

What came before and after GPT-5.4?

OpenAI's previous tracked release was GPT-5.3-Codex-Spark on Feb 12 2026, 21 days earlier. It was followed by GPT-5.4-Pro on Mar 5 2026.

GPT-5.4

Released Mar 5 2026

GPT-5.4 is an AI model released by OpenAI on Thursday, Mar 5 2026, 21 days after GPT-5.3-Codex-Spark. Benchmark results (shown below) cover BullshitBench v2, ProgramBench, Next.js Evals, Terminal-Bench 2.0, Expert-SWE (Internal), Toolathlon, and 8 more.

API pricing

Input: $2.50
Cached input: $0.25
Output: $15.00

Reasoning or thinking is supported.

USD per 1M tokens

Available from


Azure	—	$2.50	$15.00	1M
Azure	eu	$2.75	$16.50	1M
Azure	us	$2.75	$16.50	1M
Amazon Bedrock	us-east-1	$2.75	$16.50	1M

USD per 1M tokens

Benchmarks

Coding

ProgramBench

via ProgramBench

#5 of 17

Next.js Evals

65%

#16 of 28

Expert-SWE (Internal)

68.5%

#2 of 2

Terminal & CLI

Terminal-Bench 2.0

75.1%

#3 of 14

Agentic & tool use

Toolathlon

54.6%

#3 of 5

BrowseComp

82.7%

#19 of 28

CyberGym

79%

#7 of 10

OSWorld-Verified

75%

#13 of 28

Reasoning & science

Humanity's Last Exam

52.1%

with tools

via BenchLM

#20 of 42

ARC-AGI-2

73.95%

via BenchLM

#10 of 21

FrontierMath

47.6%

Tier 1–3

27.1%

Tier 4

Tier 1–3

#4 of 6

Tier 4

#4 of 6

GPQA Diamond

92.8%

#7 of 59

Knowledge work

GDPval (win/tie rate)

83%

#2 of 6

Robustness

BullshitBench v2

48%

#31 of 77

Source: ProgramBench, retrieved 11 September 2026 · Source: BenchLM, retrieved 31 August 2026. Every other score here is the figure the lab published at launch.

Compare GPT-5.4 with

GPT-5.4

Suggested comparisons

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Frequently asked questions

: GPT-5.4 was released by OpenAI on Thursday, Mar 5 2026.
: GPT-5.4 was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
: GPT-5.4 costs $2.50 per million input tokens and $15.00 per million output tokens through the OpenAI API. Cached input is $0.25 per million tokens. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.
: GPT-5.4 reports 15 tracked benchmark scores — BullshitBench v2: 48%; ProgramBench: 0%; Next.js Evals: 65%; Terminal-Bench 2.0: 75.1%; Expert-SWE (Internal): 68.5%; Toolathlon: 54.6%; BrowseComp: 82.7%; CyberGym: 79%; Humanity's Last Exam (with tools): 52.1%; ARC-AGI-2: 73.95%; FrontierMath (Tier 1–3): 47.6%; FrontierMath (Tier 4): 27.1%; GPQA Diamond: 92.8%; OSWorld-Verified: 75%; GDPval (win/tie rate): 83%. Scores are the figures published at release by OpenAI.
: No. GPT-5.4 is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.
: OpenAI's previous tracked release was GPT-5.3-Codex-Spark on Feb 12 2026, 21 days earlier. It was followed by GPT-5.4-Pro on Mar 5 2026.