Nex-N2-Pro is $0.75 cheaper per 1M input tokens (75% lower; 4x difference).
API cost decision in 10 seconds
GPT-5.6 Terra Pro (batch) vs Nex-N2-Pro
Pick Nex-N2-Pro for lower cost; pick GPT-5.6 Terra Pro (batch) only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Nex-N2-Pro for lower cost; pick GPT-5.6 Terra Pro (batch) only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Nex-N2-Pro is estimated at $0.75 vs $4 for GPT-5.6 Terra Pro (batch), saving $3.25 (81.2% lower).
Cost-first pickNex-N2-Pro
Context-first pickGPT-5.6 Terra Pro (batch)
Sample savings$3.2581.2%
10x traffic gap$32.5
GPT-5.6 Terra Pro (batch) has more context, but Nex-N2-Pro saves $3.25 on the standard workload. At 10x that traffic, the same price gap is about $32.5. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Nex-N2-Pro stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | GPT-5.6 Terra Pro (batch) | Nex-N2-Pro |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Nex-N2-Pro | $8 | $1.75 |
| Balanced workload | 1M input + 1M output | Nex-N2-Pro | $7 | $1.25 |
| Output-heavy chatbot | 1M input + 5M output | Nex-N2-Pro | $31 | $5.25 |
Nex-N2-Pro is $5 cheaper per 1M output tokens (83.3% lower; 6x difference).
GPT-5.6 Terra Pro (batch) has 787.86K more context (4.01x larger).
Nex-N2-Pro is $3.25 cheaper on the standard workload (81.2% 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
Nex-N2-Pro has the lower input price; Nex-N2-Pro has the lower output price; GPT-5.6 Terra Pro (batch) offers the larger context window. For the 1M input plus 500K output sample, Nex-N2-Pro is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $4 for GPT-5.6 Terra Pro (batch) and $0.75 for Nex-N2-Pro.
Choose GPT-5.6 Terra Pro (batch) when you care most about larger context window.
Choose Nex-N2-Pro when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Nex-N2-Pro is estimated at $0.75 vs $4 for GPT-5.6 Terra Pro (batch), saving $3.25 (81.2% lower).
- Nex-N2-Pro is $3.25 cheaper on the standard workload (81.2% lower).
- Nex-N2-Pro is $0.75 cheaper per 1M input tokens (75% lower; 4x difference).
- Nex-N2-Pro is $5 cheaper per 1M output tokens (83.3% lower; 6x difference).
- GPT-5.6 Terra Pro (batch) has 787.86K more context (4.01x larger).
| Feature | GPT-5.6 Terra Pro (batch) (OpenAI) | Nex-N2-Pro (Nex AGI) |
|---|---|---|
| Input Price prompt tokens per 1M | $1 | $0.25 |
| Completion Price per 1M tokens | $6 | $1 |
| Sample Workload Cost 1M input + 500K output | $4 | $0.75 |
| Context Window | 1.05M | 262.14K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Nex-N2-Pro | On the standard 1M input plus 500K output workload, Nex-N2-Pro is estimated at $0.75 vs $4 for GPT-5.6 Terra Pro (batch), saving $3.25 (81.2% lower). |
| High-volume input processing | Nex-N2-Pro | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Nex-N2-Pro | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-5.6 Terra Pro (batch) | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- gpt-oss-120b (free) can replace GPT-5.6 Terra Pro (batch) when lower sample workload cost matters most: $0.
- gpt-oss-20b (free) can replace GPT-5.6 Terra Pro (batch) when lower sample workload cost matters most: $0.
- gpt-oss-20b can replace GPT-5.6 Terra Pro (batch) when lower sample workload cost matters most: $0.1.
- gpt-oss-120b can replace GPT-5.6 Terra Pro (batch) when lower sample workload cost matters most: $0.12.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
- DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.
- DeepSeek V4 Flash 0731 · DeepSeek · #1
- MiMo-V2.5 · Xiaomi · #2
- Hy3 · Tencent · #3
- Ox Alpha · stealth · #4
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Open Nex AGI modelsGPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
Nex-N2-Pro is an agentic mixture-of-experts model from Nex AGI, with 17B active parameters out of 397B total. Built on the Qwen3.5 architecture, it accepts text and image input and produces...