GPT-4 Turbo Preview
VerifiedPowerful LLM with 128k context for advanced text tasks.
About GPT-4 Turbo Preview
This model follows a transformer-based architecture optimized for efficiency at scale. OpenAI developed it as a preview release with a significantly larger context capacity than earlier versions. It remains closed-source with no public parameter count disclosed.
Key strengths include reliable handling of long documents and multi-turn conversations without losing coherence. The design prioritizes practical deployment for production use cases over open-weight accessibility. Performance focuses on balanced reasoning across diverse text domains.
Typical usage covers content generation, summarization of lengthy materials, and code-related tasks. Developers integrate it via API for chatbots, analysis tools, and automated writing assistants. Its text-only modality suits applications that do not require image or audio processing.
Capabilities
How GPT-4 Turbo Preview compares
GPT-4 Turbo Preview (striped bar) vs other language models on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · GPT-4 Turbo Preview ranks #141 of 141
Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Long-form document analysis
The 128k token context enables processing entire books, research papers, or code repositories in one go for summarization or extraction tasks.
Complex software development
It supports multi-file reasoning, debugging, and generating production-level code across languages with strong logical consistency.
Detailed instruction following
The model reliably executes multi-step workflows such as data transformation pipelines or structured report generation from raw inputs.
Strengths & limitations
Strengths
- +Strong multi-step reasoning
- +Effective use of large context windows
- +Versatile across domains
- +Improved response speed
Limitations
- –Text-only input
- –Knowledge cutoff date
- –Can still hallucinate facts
Cost calculator
Estimate what GPT-4 Turbo Preview would cost for your usage.
Based on GPT-4 Turbo Preview's $10.00/1M input · $30.00/1M output. Estimate only — actual cost varies by provider and caching.
Quick start
OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const completion = await client.chat.completions.create({
model: "openai/gpt-4-turbo-preview",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: openai/gpt-4-turbo-preview
Editor's verdict
GPT-4 Turbo Preview is OpenAI's proprietary language models with a 128K-token context window.
At $30.00 per 1M output tokens, it is premium-priced for its class.
It is available through OpenAI's API and aggregators like OpenRouter.
Best suited to strong multi-step reasoning and effective use of large context windows.
Frequently asked questions
It provides a 128,000 token context length for handling extended inputs and conversations.
User reviews
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