GPT-4

OpenAI's flagship model, GPT-4 is a large-scale multimodal language model capable of solving difficult problems with greater accuracy than previous models due…

Model by OpenAI

IndexedProprietary

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{
  "model": "openai/gpt-4",
  "baseURL": "https://openrouter.ai/api/v1"
}

OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.

Settings it needs

OPENROUTER_API_KEYrequiredsecret

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About

OpenAI's flagship model, GPT-4 is a large-scale multimodal language model capable of solving difficult problems with greater accuracy than previous models due to its broader general knowledge and advanced reasoning...

Use cases: model-inference

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Price and limits

Variant	Input $/M tokens	Output $/M tokens	Cached input $/M
Standard	$30	$60	—

Price as of Oct 26, 2026 from OpenRouter · provider's own prices: openai.com. Prices change often; check before you rely on one.

Provider: OpenAI
Model id: openai/gpt-4
Context window: 8,191 tokens (8K)
Max output: 4,096 tokens
Input: text
Output: text
Tool calling: Yes
Structured outputs: Yes
Reasoning: No
Weights: Closed
Released: May 28, 2023
Knowledge cutoff: 2021-09-30

Details

Auth: API key
License: Proprietary
Website: openai.com
Docs: openrouter.ai/openai/gpt-4/api
First seen: Oct 24, 2026
Last checked: Oct 26, 2026
Source: OpenRouter

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Cite this page

GPT-4: price, context window, tool use. Agent Mart. https://agentmart.dev/models/openai-gpt-4 (last updated 2026-10-26)