Activefrontierllm Proprietary

GPT-4-turbo

by OpenAI· Released April 2024· Cutoff December 2023

GPT-4 Turbo is OpenAI's most capable large language model, offering improved performance and a larger context window compared to GPT-4. It supports vision, function calling, and JSON mode, and is optimized for cost efficiency with lower pricing than its predecessor.

Official Site API Docs

Input cost

$10.00 per 1M tokens

Output cost

$30.00 per 1M tokens

Context window

128K tokens

Max output

4096 tokens

Modalities

textimage

License

proprietary

Capabilities

Function CallingVisionCode GenerationStreamingJSON ModeReproducible OutputsParallel Tool Calls

Best For

Complex tasks requiring large context, vision understanding, and reliable structured outputs.

Strengths

Largest context window (128K tokens) among OpenAI models
Supports vision and image understanding
Lower cost than GPT-4 while maintaining high quality
Strong performance on coding and reasoning benchmarks

Limitations

Not as fast as GPT-4o or GPT-4o-mini
Higher latency for long context
May still produce hallucinations on niche topics
Limited to text and image inputs (no audio/video)

Use Cases

Analyzing long documents or contracts

Building chatbots with large knowledge bases

Image captioning and visual question answering

Code generation and debugging with large codebases

Data extraction from PDFs and images

Multi-step reasoning and planning

Generating structured JSON outputs for APIs

Improvements Over Previous Model

Context window increased from 8K/32K to 128K tokens
Pricing reduced: $10/$30 per 1M tokens vs $30/$60 for GPT-4
Knowledge cutoff updated from September 2021 to December 2023
Added vision capabilities (image input)
Improved instruction following and reduced 'laziness'
Supports JSON mode and reproducible outputs
Parallel function calling support

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