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LLM ComparisonGPT-5.4DeepSeek R1

GPT-5.4 vs DeepSeek R1

Compare GPT-5.4 and DeepSeek R1. Build AI products powered by either model on Appaca.

Model Comparison

FeatureGPT-5.4DeepSeek R1
ProviderOpenAIDeepSeek
Model Typetexttext
Context Window1,050,000 tokensN/A
Input Cost
$2.50/ 1M tokens
N/A
Output Cost
$15.00/ 1M tokens
N/A

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Strengths & Best Use Cases

GPT-5.4

OpenAI

1. Best Intelligence at Scale

  • OpenAI positions GPT-5.4 as its frontier model for agentic, coding, and professional workflows.
  • Built for complex professional work where stronger reasoning and higher answer quality matter.

2. Configurable Reasoning + Multimodal Input

  • Supports configurable reasoning effort from none to xhigh, letting teams balance speed and depth.
  • Accepts both text and image inputs while producing text output.

3. Massive Context for Long-Running Work

  • 1.05M token context window supports very large codebases, documents, and multi-step workflows.
  • Allows up to 128 k output tokens for long-form answers and larger generations.

4. Updated Knowledge & Broad Tool Support

  • Knowledge cut-off of Aug 31 2025 keeps it current for newer frameworks and business context.
  • Supports tools like web search, file search, code interpreter, hosted shell, computer use, and MCP in the Responses API.

DeepSeek R1

DeepSeek

1. Real-time reasoning and decision-making

  • Built for scenarios that require instant output.
  • Great for applications with fast-changing data.

2. Excellent for dynamic optimization

  • Pricing adjustments, recommendations, routing, and system tuning.

3. Strong performance in finance and e-commerce

  • Tracks market shifts.
  • Updates predictions on the fly.
  • Optimizes recommendations in real time.

4. High-speed pattern recognition

  • Quickly interprets signals from streaming data.
  • Useful in trading bots, alerts, and monitoring systems.

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