OpenAI

GPT-5.4 Pro

GPT-5.4 Pro is a GPT-5 model from OpenAI, released in 2026-03. It costs $30 / $180 per 1M, has a 400k-token context window, and is best for complex-reasoning, research, math. Last verified 2026-04-19.

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Spec sheet

Pricing

Input
$30 / 1M
Output
$180 / 1M
Cached input
$3 / 1M
Batch discount
50%
Free tier
No

Context & speed

Context window
400k tokens
Max output
64k tokens
Throughput
~45 tok/s
Time to first token
~2500 ms
Speed tier
slow

Capabilities

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

Deployment

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

Estimated monthly cost

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

10k calls/mo
$1.7k
per month
100k calls/mo
$17k
per month
1M calls/mo
$168k
per month

When to use GPT-5.4 Pro

Sweet spot

  • complex reasoning
  • research
  • math
  • hardest coding

Known trade-offs

  • extremely expensive
  • slow
  • overkill for most tasks

Works with

OpenAI SDKAzure OpenAI

Compare GPT-5.4 Pro to other models

vs Claude Opus 4.7vs GPT Realtimevs Claude Sonnet 4.6vs GPT-5.4vs Gemini 3.1 Provs Grok 4.20

FAQ — GPT-5.4 Pro

How much does GPT-5.4 Pro cost?

GPT-5.4 Pro costs $30 / $180 per 1M tokens on the OpenAI API. Cached input reads cost $3 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 Pro?

GPT-5.4 Pro has a 400k-token context window with up to 64k tokens of output. That's enough for long reports, extended chat histories, or structured document analysis.

Does GPT-5.4 Pro have a free tier?

No — Paid-only — no free tier.

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

GPT-5.4 Pro is HIPAA-eligible, not available in an EU region, and is API-only. Zero data retention is available for enterprise customers.

What is GPT-5.4 Pro best for?

GPT-5.4 Pro is best for complex reasoning, research, math, hardest coding. Trade-offs to be aware of: extremely expensive; slow; overkill for most tasks.

Which tools and SDKs work with GPT-5.4 Pro?

GPT-5.4 Pro integrates with OpenAI SDK, Azure OpenAI. Most major AI frameworks support it either natively or through OpenAI-compatible endpoints.