GPT-5.1-Codex-Mini is $0.08 cheaper per 1M input tokens (23.1% lower; 1.3x difference).
API cost decision in 10 seconds
Qwen3.6 Plus vs GPT-5.1-Codex-Mini
Pick GPT-5.1-Codex-Mini for lower cost; pick Qwen3.6 Plus only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick GPT-5.1-Codex-Mini for lower cost; pick Qwen3.6 Plus only if the larger context window matters more.
On the standard 1M input plus 500K output workload, GPT-5.1-Codex-Mini is estimated at $1.25 vs $1.3 for Qwen3.6 Plus, saving $0.05 (3.8% lower).
Cost-first pickGPT-5.1-Codex-Mini
Context-first pickQwen3.6 Plus
Sample savings$0.053.8%
10x traffic gap$0.5
Qwen3.6 Plus has more context, but GPT-5.1-Codex-Mini saves $0.05 on the standard workload. At 10x that traffic, the same price gap is about $0.5. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors GPT-5.1-Codex-Mini, balanced workload favors GPT-5.1-Codex-Mini, and output-heavy chatbot favors Qwen3.6 Plus.
| Workload shape | Token mix | Better pick | Qwen3.6 Plus | GPT-5.1-Codex-Mini |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | GPT-5.1-Codex-Mini | $2.6 | $2.25 |
| Balanced workload | 1M input + 1M output | GPT-5.1-Codex-Mini | $2.27 | $2.25 |
| Output-heavy chatbot | 1M input + 5M output | Qwen3.6 Plus | $10.07 | $10.25 |
Qwen3.6 Plus is $0.05 cheaper per 1M output tokens (2.5% lower; 1.03x difference).
Qwen3.6 Plus has 600K more context (2.5x larger).
GPT-5.1-Codex-Mini is $0.05 cheaper on the standard workload (3.8% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
GPT-5.1-Codex-Mini has the lower input price; Qwen3.6 Plus has the lower output price; Qwen3.6 Plus offers the larger context window. For the 1M input plus 500K output sample, GPT-5.1-Codex-Mini is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $1.3 for Qwen3.6 Plus and $1.25 for GPT-5.1-Codex-Mini.
Choose Qwen3.6 Plus when you care most about lower output-token price, and larger context window.
Choose GPT-5.1-Codex-Mini when you care most about lower input-token price.
- On the standard 1M input plus 500K output workload, GPT-5.1-Codex-Mini is estimated at $1.25 vs $1.3 for Qwen3.6 Plus, saving $0.05 (3.8% lower).
- GPT-5.1-Codex-Mini is $0.05 cheaper on the standard workload (3.8% lower).
- GPT-5.1-Codex-Mini is $0.08 cheaper per 1M input tokens (23.1% lower; 1.3x difference).
- Qwen3.6 Plus is $0.05 cheaper per 1M output tokens (2.5% lower; 1.03x difference).
- Qwen3.6 Plus has 600K more context (2.5x larger).
| Feature | Qwen3.6 Plus (Qwen) | GPT-5.1-Codex-Mini (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.325 | $0.25 |
| Completion Price per 1M tokens | $1.95 | $2 |
| Sample Workload Cost 1M input + 500K output | $1.3 | $1.25 |
| Context Window | 1M | 400K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | GPT-5.1-Codex-Mini | On the standard 1M input plus 500K output workload, GPT-5.1-Codex-Mini is estimated at $1.25 vs $1.3 for Qwen3.6 Plus, saving $0.05 (3.8% lower). |
| High-volume input processing | GPT-5.1-Codex-Mini | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Qwen3.6 Plus | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Qwen3.6 Plus | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Qwen3 Next 80B A3B Instruct (free) can replace Qwen3.6 Plus when lower sample workload cost matters most: $0.
- Qwen3 Coder 480B A35B (free) can replace Qwen3.6 Plus when lower sample workload cost matters most: $0.
- Qwen2.5 7B Instruct can replace Qwen3.6 Plus when lower sample workload cost matters most: $0.09.
- Qwen3.5-9B can replace Qwen3.6 Plus when lower sample workload cost matters most: $0.11.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- Gemini 3.1 Flash Lite offers 1.05M context with $1 sample workload cost.
- DeepSeek V4 Pro offers 1.05M context with $0.87 sample workload cost.
- No popular competitor is currently available.
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GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex