Is GPT-5.4 Image 2 available on FastMetal?

Not at the moment. GPT-6.1 Sol, from the same lab, is available on the FastMetal API today.

What is the context window of GPT-5.4 Image 2?

272,000 tokens, shared between the prompt and the response.

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OpenAI

openai/gpt-5-4-image-2

Not Available

GPT-5.4 Image 2

It enables rich multimodal workflows, allowing users to seamlessly move between reasoning, coding, and...

4/21/2026

272,000 tokens

Specifications

Modalities

Input

image

text

file

Output

image

text

Supported Parameters

frequency_penalty

include_reasoning

logit_bias

logprobs

max_tokens

presence_penalty

reasoning

reasoning_effort

response_format

seed

stop

structured_outputs

top_logprobs

Max Output Tokens

128,000

Reasoning Configuration

Default: Thinking off
Selectable effort levels: xhigh
high
medium
low
none
Turning thinking off: Possible (reasoning.enabled: false)

How to control thinking, and what it costs

Data policy

Prompt retention: Unknown — we could not confirm
Training: Unknown — not declared

"Unknown" does not mean "safe". It means we could not confirm it.

Whether a provider trains on prompts is a declared value from our terms with them. Retention is determined from the upstream listing for every host this model can reach. Neither is guessed.

Frequently asked questions

Is GPT-5.4 Image 2 available on FastMetal?: Not at the moment. GPT-6.1 Sol, from the same lab, is available on the FastMetal API today.
What is the context window of GPT-5.4 Image 2?: 272,000 tokens, shared between the prompt and the response.

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