What is OpenAI: GPT-4 Turbo's context window?

OpenAI: GPT-4 Turbo accepts up to 128,000 tokens in a single request, and can return up to 4,096 output tokens.

Is there a cheaper OpenRouter model than OpenAI: GPT-4 Turbo?

Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $10.00 for OpenAI: GPT-4 Turbo, with a 16,385 token context window.

Where does this OpenAI: GPT-4 Turbo price come from?

From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

OpenAI: GPT-4 Turbo pricing

The latest GPT-4 Turbo model with vision capabilities. Vision requests can now use JSON mode and function calling. Training data: up to December 2023. OpenAI: GPT-4 Turbo from OpenRouter costs $10.00 per 1M input tokens and $30.00 per 1M output tokens. Context window 128,000 tokens.

API id openai/gpt-4-turbo · OpenRouter · source · updated 2026-09-25 · general-purpose

$10.00

Input / 1M tokens

$30.00

Output / 1M tokens

—

Cached input / 1M

128K

Context window

OpenAI: GPT-4 Turbo specifications

Provider: OpenRouter
API id: openai/gpt-4-turbo
Model type: general-purpose
Context window: 128K tokens
Max output: 4K tokens
Currency: USD
Price source: Provider API
Last checked: 2026-09-25

What OpenAI: GPT-4 Turbo costs in practice

Estimated cost at common usage volumes
Workload	Input tokens	Output tokens	Estimated cost
Short chat turn	1,000	500	$0.03
Document summary	50,000	2,000	$0.56
1M tokens in, 200K out	1,000,000	200,000	$16.00

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does OpenAI: GPT-4 Turbo cost per 1M tokens?: OpenAI: GPT-4 Turbo costs $10.00 per 1M input tokens and $30.00 per 1M output tokens on the standard tier.
What is OpenAI: GPT-4 Turbo's context window?: OpenAI: GPT-4 Turbo accepts up to 128,000 tokens in a single request, and can return up to 4,096 output tokens.
Is there a cheaper OpenRouter model than OpenAI: GPT-4 Turbo?: Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $10.00 for OpenAI: GPT-4 Turbo, with a 16,385 token context window.
Where does this OpenAI: GPT-4 Turbo price come from?: From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

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OpenAI: GPT-4 Turbo specifications

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What OpenAI: GPT-4 Turbo costs in practice

Common questions

Head-to-head comparisons

Other OpenRouter models