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OpenAI: GPT-4.1

OpenAI
Vision Tools Streaming Reasoning
128K
Context
$3.00
Input /1M
$12.00
Output /1M
4K
Max Output
Run API Call Open in Chat

OpenAI: GPT-4.1

Model Overview

Property Value
Model ID openai/gpt-4.1
Name GPT-4.1
Released November 2024
Provider OpenAI

Description

Enhanced version of GPT-4 with improved reasoning and multimodal capabilities. This model supports multimodal capabilities including vision and image understanding. It features advanced reasoning capabilities for complex problem-solving tasks.

Specifications

Spec Value
Context Window 128,000 tokens
Max Completion 4,096 tokens
Knowledge Cutoff April 2024
Modalities Text + Image

Pricing

Type Price
Input $3.00 per 1M tokens
Output $12.00 per 1M tokens
Cache Input $0.75 per 1M tokens
Training $25.00 per 1M tokens

Capabilities

  • Vision: Yes
  • Tool Use: Yes
  • JSON Mode: Yes
  • Reasoning: Yes
  • Streaming: Yes
  • Function Calling: Yes

Use Cases

Multimodal analysis, advanced reasoning, visual understanding

Best For

  • Advanced visual understanding and reasoning
  • Complex reasoning tasks with extended thinking
  • Production systems requiring tool integration
  • Real-time applications requiring low latency
  • Systems where cost is the primary concern

Integration with LangMart

Gateway Support: Type 2 (Cloud), Type 3 (Self-hosted)

API Usage:

curl -X POST https://api.langmart.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-4.1",
    "messages": [{"role": "user", "content": "Hello"}],
    "max_tokens": 4096
  }'

Testing in LangMart

# Test chat completion
curl -X POST https://api.langmart.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-4.1",
    "messages": [
      {"role": "user", "content": "Explain quantum computing"}
    ]
  }'

# Test with structured output
curl -X POST https://api.langmart.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-4.1",
    "messages": [{"role": "user", "content": "Extract data"}],
    "response_format": {"type": "json_object"}
  }'

From OpenAI:

  • GPT-4 Family - Advanced reasoning
  • GPT-3.5 Turbo - Fast and affordable
  • GPT-4o - Optimized multimodal
  • o1 - Extended reasoning

References

Last Updated: December 28, 2025 Generator: OpenAI Markdown Documentation Generator