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OpenAI: GPT-5.4 Pro

openai/gpt-5-4-pro
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GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks.

Modalities
In / out per 1M$30 / $180
Context1M
ReleasedMar 5, 2026

Providers

3 providers serve this model upstream.

Providers serving this model
ProviderInput /MOutput /MCache read /MLatency P50Throughput P50Uptime
Azure$30$180Variable200.25s5 tps100%
OpenAI$30$180Variable7.23s6 tps100%
OpenAI$15$90Variable315.61s8 tps—

Market-wide measurements, refreshed every 15 minutes. They describe who serves GPT-5.4 Pro in general, not how ProjectCOZY routes your requests.

Pricing

List rates per 1M tokens — what GPT-5.4 Pro costs pay-as-you-go elsewhere, not what you pay here.

Input
$30
per 1M tokens
Output
$180
per 1M tokens
Cache read
—
not published
Included in every pass
GPT-5.4 Pro is included in every ProjectCOZY pass at no extra cost — one flat rate, no per-token metering. The rates above are there for comparison.

Performance

Time to first token and output speed across every provider.

No measurements published

This measurement has not been published for the model yet. It appears as soon as it is.

Uptime

100% of requests were served successfully over the last 3 days, across all providers.

Last 3 daysAvailability 99.94%
Oct 11, 2:00 PMNow
Availability over the last 24 hoursAvailability 99.49%
100% 93% 87% 80%
Oct 13, 2:40 PMNow

Apps

Tools that most often run GPT-5.4 Pro, by tokens this week.

DeepSeek Harness30% of tokens8.3MCodexCli Agent · 29.3% of tokens8.1MOpen WebUIGeneral Chat · 15.6% of tokens4.3MOpenClawPersonal Agent · 13% of tokens3.6Mfleet12% of tokens3.3M

Activity

126.4M tokens processed market-wide in the last month.

05.0M10.0M15.0M20.0M
Sep 14Sep 19Sep 24Sep 29Oct 4Oct 9Oct 14
Tokens

FAQ

Which model id do I use for GPT-5.4 Pro?
openai/gpt-5.4-pro. Send it as the model field from any OpenAI-compatible client, against http://192.168.1.55/v1.
How much context does GPT-5.4 Pro hold?
1,050,000 tokens per request, of which up to 128,000 can be the response.
What can it accept and return?
Input: text, image, file. Output: text.
What does GPT-5.4 Pro cost on a pass?
Nothing beyond the pass itself. Pay-as-you-go elsewhere it lists at $30 per 1M input tokens and $180 per 1M output tokens.
Who built GPT-5.4 Pro?
OpenAI, in the GPT family.

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