GPT-5.2 Codex vs Qwen3-Flash
Compare GPT-5.2 Codex and Qwen3-Flash. Build AI products powered by either model on Appaca.
Model Comparison
| Feature | GPT-5.2 Codex | Qwen3-Flash |
|---|---|---|
| Provider | OpenAI | Alibaba Cloud |
| Model Type | text | text |
| Context Window | 400,000 tokens | 1,000,000 tokens |
| Input Cost | $1.75/ 1M tokens | $0.02/ 1M tokens |
| Output Cost | $14.00/ 1M tokens | $0.22/ 1M tokens |
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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.
Qwen3-Flash
Alibaba Cloud1. Enhanced Flash-generation performance
- Better factual accuracy and reasoning.
2. Very inexpensive
- Perfect for high-volume automation and micro-agents.
3. Hybrid thinking mode
- Not typical for small models.
4. Large context capacity
- Up to 1M tokens.
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
textProfessional Email Rewriter
Rewrite your rough drafts into polished, professional emails suitable for any business context.
Cold Outreach Email Generator
Generate high-converting cold emails for sales, networking, or partnerships.
Bug Fixer & Debugger
Identify bugs in your code, understand why they happen, and get a corrected version.
Best for Qwen3-Flash
textValue-Added Service Inquiry (Pre-Arrival Email)
Write a polite pre-arrival email to request fee waivers or courtesy upgrades like premium Wi‑Fi and early check-in.
Blog Post Outline Generator
Generate detailed outlines for blog posts to streamline your writing process and ensure comprehensive coverage.
Professional Email Rewriter
Rewrite your rough drafts into polished, professional emails suitable for any business context.