Is GPT-4.1 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-4.1?

1,047,576 tokens, shared between the prompt and the response.

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OpenAI

openai/gpt-4-1

Not Available

GPT-4.1

GPT-4.1 is a flagship large language model optimized for advanced instruction following, real-world software engineering, and long-context reasoning. It supports a 1 million token context window and outperforms GPT-4o and GPT-4.5 across coding (54.6% SWE-bench Verified), instruction compliance (87.4% IFEval), and multimodal understanding benchmarks. It is tuned for precise code diffs, agent reliability, and high recall in large document contexts, making it ideal for agents, IDE tooling, and enterprise knowledge retrieval.

4/14/2025

1,047,576 tokens

Specifications

Modalities

Input

image

text

file

Output

text

Supported Parameters

max_tokens

response_format

seed

structured_outputs

temperature

tool_choice

tools

top_p

Max Output Tokens

32,768

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-4.1 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-4.1?: 1,047,576 tokens, shared between the prompt and the response.

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