GPT-5.2 Codex vs DeepSeek V3
Compare GPT-5.2 Codex and DeepSeek V3. Build AI products powered by either model on Appaca.
Model Comparison
| Feature | GPT-5.2 Codex | DeepSeek V3 |
|---|---|---|
| Provider | OpenAI | DeepSeek |
| Model Type | text | text |
| Context Window | 400,000 tokens | N/A |
| Input Cost | $1.75/ 1M tokens | N/A |
| Output Cost | $14.00/ 1M tokens | N/A |
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Strengths & Best Use Cases
GPT-5.2 Codex
OpenAI1. Optimized for Long-Horizon Coding Tasks
- OpenAI describes GPT-5.2 Codex as a highly intelligent coding model built for long-horizon, agentic coding work.
- Well suited to planning, refactoring, debugging, and multi-step implementation flows inside real codebases.
2. Adjustable Reasoning for Coding Work
- Supports configurable reasoning effort from low to xhigh depending on speed and quality needs.
- Accepts both text and image inputs while producing text output.
3. Large Context + Long Output
- 400 k token context window supports broad repository understanding and larger working sets.
- Allows up to 128 k output tokens for longer patches, code generation, and technical explanations.
4. Up-to-Date Model Snapshot
- Knowledge cut-off of Aug 31 2025 keeps it current with newer tools and frameworks.
- Supports streaming, function calling, and structured outputs for tool-driven coding workflows.
DeepSeek V3
DeepSeek1. 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.
Prompts to Get Started
Use these prompts to power AI products you build on Appaca. Each works great with the models above.
Best for GPT-5.2 Codex
textCode Review Assistant
Get constructive feedback on your code regarding performance, security, and readability.
Meeting Notes Summarizer
Transform raw meeting transcripts or messy notes into clear, structured summaries with action items.
Cold Outreach Email Generator
Generate high-converting cold emails for sales, networking, or partnerships.
Best for DeepSeek V3
textBuild Emergency Fund
Calculate personalized emergency fund targets with this AI prompt, offering strategies to build a buffer without sacrificing essentials.
Customer Complaint Response Generator
Generate professional, empathetic responses to customer complaints that de-escalate situations and rebuild trust.
Score Cold Sales Emails
Evaluate and improve a cold sales email using a weighted scorecard (clarity, relevance, proof, CTA, deliverability) with specific rewrite suggestions.