GPT-5.3 Codex vs Qwen-Long
Compare GPT-5.3 Codex and Qwen-Long. Build AI products powered by either model on Appaca.
Model Comparison
| Feature | GPT-5.3 Codex | Qwen-Long |
|---|---|---|
| Provider | OpenAI | Alibaba Cloud |
| Model Type | text | text |
| Context Window | 400,000 tokens | 10,000,000 tokens |
| Input Cost | $1.75/ 1M tokens | $0.07/ 1M tokens |
| Output Cost | $14.00/ 1M tokens | $0.29/ 1M tokens |
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Strengths & Best Use Cases
GPT-5.3 Codex
OpenAI1. Strongest Codex Model for Agentic Engineering
- OpenAI positions GPT-5.3 Codex as its most capable agentic coding model to date.
- Built for long-horizon software engineering tasks that require planning, iteration, and reliable code transformation across files.
2. Configurable Reasoning + Multimodal Input
- Supports configurable reasoning effort from low to xhigh so teams can trade off depth against latency.
- Accepts both text and image inputs while producing text output.
3. Large Context for Real Codebases
- 400 k token context window helps it work across larger repositories, implementation plans, and supporting documentation.
- Allows up to 128 k output tokens for longer code generations, patches, and technical write-ups.
4. Current Knowledge for Modern Dev Workflows
- Knowledge cut-off of Aug 31 2025 keeps it aligned with newer frameworks, libraries, and tooling.
- Supports streaming, function calling, and structured outputs for agent-style coding workflows.
Qwen-Long
Alibaba Cloud1. Extremely long context window
- Up to 10 million tokens.
2. Ideal for document-heavy workflows
- Legal, financial, RAG, compliance, research.
3. Low-cost for large-scale ingestion
- Optimized pricing for big inputs.
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-5.3 Codex
textCold Outreach Email Generator
Generate high-converting cold emails for sales, networking, or partnerships.
Professional Email Rewriter
Rewrite your rough drafts into polished, professional emails suitable for any business context.
Meeting Notes Summarizer
Transform raw meeting transcripts or messy notes into clear, structured summaries with action items.
Best for Qwen-Long
textMarketing Skills Matrix (Hiring + Training Plan)
Create a marketing skills matrix that identifies the competencies needed to communicate your USP and solve evolving persona challenges.
Corporate Rate Negotiation: Email Script Generator
Draft a professional, data-backed email to negotiate corporate hotel rates and value-add perks.
Land Negotiation Strategy (Max Profit Margin)
Create a step-by-step negotiation plan for land deals using MAO, comps, and risk-based justifications for price reductions.