o3 vs DeepSeek V3

Compare o3 and DeepSeek V3. Find out which one is better for your use case.

Model Comparison

Featureo3DeepSeek V3
ProviderOpenAIDeepSeek
Model Typetexttext
Context Window200,000 tokensN/A
Input Cost$2.00 / 1M tokensN/A
Output Cost$8.00 / 1M tokensN/A

Strengths & Best Use Cases

o3

1. Advanced reasoning capability

  • Designed for multi-step thinking across text, code, and visual inputs.
  • Excels at math, science, logic puzzles, and complex analytical workflows.

2. Strong performance across domains

  • Highly capable in technical writing, data analysis, and structured problem-solving.
  • Useful for research, engineering tasks, and intricate instruction-following.

3. Visual reasoning support

  • Accepts image inputs, enabling tasks such as diagram analysis, chart interpretation, and visual logic assessments.

4. High output capacity

  • Up to 100,000 output tokens, supporting long-form content, technical breakdowns, and multi-part solutions.

5. Excellent instruction following

  • Produces detailed, step-by-step responses for tasks requiring precision and clarity.
  • Ideal for educational explanations, system design reasoning, and code walkthroughs.

6. Large 200K context window

  • Handles long documents, multi-file reasoning, or extended conversations with minimal loss of context.

7. Broad API support

  • Works with Chat Completions, Responses, Realtime, Assistants, Batch, Embeddings, Image Generation, and more.
  • Supports streaming and function calling for advanced workflows.

8. Positioned as a legacy reasoning model

  • Remains extremely capable but formally succeeded by GPT-5, which offers stronger reasoning and performance.

DeepSeek V3

1. Exceptional at large-scale data analysis

  • Designed to handle massive datasets.
  • Identifies trends, correlations, and anomalies.

2. High performance in predictive analytics

  • Useful for forecasting, modeling, and probabilistic predictions.
  • Popular in finance, medical research, and market trend analysis.

3. Optimized for structured, data-heavy workloads

  • Stronger at analytical and statistical tasks than general text generation.

4. Enterprise-oriented capabilities

  • Built for businesses needing deep insights from continuous data streams.

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