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OpenAI

GPT-4 Turbo Preview

The preview GPT-4 model with improved instruction following, JSON mode, reproducible outputs, parallel function calling, and more. Training data: up to Dec 2023. **Note:** heavily rate limited by OpenAI while...

Model facts

Context window
128K tokens
Maximum output
4K tokens
Cheapest paid input
$10 per 1M tokens
Cheapest paid output
$30 per 1M tokens
Open weights
no
Providers
1

Capabilities and modalities

tool calling, structured output, temperature control, text.

Observed price history

  • 2026-08-24: $10 input / $30 output per 1M tokens

API providers

  • OpenRouter — model id openai/gpt-4-turbo-preview; $10 input / $30 output per 1M tokens; provider documentation