OpenAI

GPT-5.4

GPT-5.4 is a GPT-5 model from OpenAI, released in 2026-03. It costs $2.5 / $15 per 1M, has a 400k-token context window, and is best for general, reasoning, agents. Last verified 2026-04-19.

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Spec sheet

Pricing

Input
$2.5 / 1M
Output
$15 / 1M
Cached input
$0.25 / 1M
Batch discount
50%
Free tier
No

Context & speed

Context window
400k tokens
Max output
32k tokens
Throughput
~105 tok/s
Time to first token
~550 ms
Speed tier
balanced

Capabilities

Tool use
Yes
Structured output
Yes
Prompt caching
Yes
Extended thinking
Yes
Vision input
Yes
Audio in / out
No
Fine-tuning
Yes

Deployment

Open weights
No
On-prem
No
HIPAA eligible
Yes
Zero retention
Yes
Regions
us, eu

Estimated monthly cost

Assumes typical token shape: 2k input, 600 output per call. Prompt caching is excluded from these figures.

10k calls/mo
$140.00
per month
100k calls/mo
$1.4k
per month
1M calls/mo
$14k
per month

When to use GPT-5.4

Sweet spot

  • general
  • reasoning
  • agents
  • content writing
  • vision
  • coding

Known trade-offs

  • behind Claude Sonnet on agent/tool benchmarks

Works with

OpenAI SDKAzure OpenAICursorVercel AI SDKLangChainLlamaIndexOpenRouter

Compare GPT-5.4 to other models

vs Claude Sonnet 4.6vs GPT Realtimevs Gemini 3.1 Provs Grok 4.20vs Claude Opus 4.7vs Claude Haiku 4.5

FAQ — GPT-5.4

How much does GPT-5.4 cost?

GPT-5.4 costs $2.5 / $15 per 1M tokens on the OpenAI API. Cached input reads cost $0.25 per 1M, cutting the input bill by roughly 90% on repeat system prompts. The batch API offers a 50% discount for async workloads.

What is the context window of GPT-5.4?

GPT-5.4 has a 400k-token context window with up to 32k tokens of output. That's enough for long reports, extended chat histories, or structured document analysis.

Does GPT-5.4 have a free tier?

No — Free $5 credit for new accounts; paid thereafter.

Is GPT-5.4 HIPAA / EU / on-prem friendly?

GPT-5.4 is HIPAA-eligible, available in EU regions, and is API-only. Zero data retention is available for enterprise customers.

What is GPT-5.4 best for?

GPT-5.4 is best for general, reasoning, agents, content writing. Trade-offs to be aware of: behind Claude Sonnet on agent/tool benchmarks.

Which tools and SDKs work with GPT-5.4?

GPT-5.4 integrates with OpenAI SDK, Azure OpenAI, Cursor, Vercel AI SDK, LangChain, LlamaIndex, OpenRouter. Most major AI frameworks support it either natively or through OpenAI-compatible endpoints.