Hy4 preview is $29.17 cheaper per 1M input tokens (97.2% lower; 36x difference).
API cost decision in 10 seconds
NewHy4 preview vs GPT-5.5 Pro
Pick Hy4 preview for lower cost; pick GPT-5.5 Pro 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 Hy4 preview for lower cost; pick GPT-5.5 Pro only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Hy4 preview is estimated at $2.08 vs $120 for GPT-5.5 Pro, saving $117.92 (98.3% lower).
Cost-first pickHy4 preview
Context-first pickGPT-5.5 Pro
Sample savings$117.9298.3%
10x traffic gap$1179.15
GPT-5.5 Pro has more context, but Hy4 preview saves $117.92 on the standard workload. At 10x that traffic, the same price gap is about $1179.15. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Hy4 preview stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Hy4 preview | GPT-5.5 Pro |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Hy4 preview | $5.42 | $240 |
| Balanced workload | 1M input + 1M output | Hy4 preview | $3.33 | $210 |
| Output-heavy chatbot | 1M input + 5M output | Hy4 preview | $13.34 | $930 |
Hy4 preview is $177.5 cheaper per 1M output tokens (98.6% lower; 72x difference).
GPT-5.5 Pro has 1.42K more context (1x larger).
Hy4 preview is $117.92 cheaper on the standard workload (98.3% 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
Hy4 preview has the lower input price; Hy4 preview has the lower output price; GPT-5.5 Pro offers the larger context window. For the 1M input plus 500K output sample, Hy4 preview is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $2.08 for Hy4 preview and $120 for GPT-5.5 Pro.
Choose Hy4 preview when you care most about lower input-token price, and lower output-token price.
Choose GPT-5.5 Pro when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Hy4 preview is estimated at $2.08 vs $120 for GPT-5.5 Pro, saving $117.92 (98.3% lower).
- Hy4 preview is $117.92 cheaper on the standard workload (98.3% lower).
- Hy4 preview is $29.17 cheaper per 1M input tokens (97.2% lower; 36x difference).
- Hy4 preview is $177.5 cheaper per 1M output tokens (98.6% lower; 72x difference).
- GPT-5.5 Pro has 1.42K more context (1x larger).
| Feature | NewHy4 preview (Tencent) | GPT-5.5 Pro (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.834 | $30 |
| Completion Price per 1M tokens | $2.501 | $180 |
| Sample Workload Cost 1M input + 500K output | $2.08 | $120 |
| Context Window | 1.05M | 1.05M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Hy4 preview | On the standard 1M input plus 500K output workload, Hy4 preview is estimated at $2.08 vs $120 for GPT-5.5 Pro, saving $117.92 (98.3% lower). |
| High-volume input processing | Hy4 preview | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Hy4 preview | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-5.5 Pro | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Hy3 (free) can replace Hy4 preview when lower sample workload cost matters most: $0.
- Hy-MT2-1.8B can replace Hy4 preview when lower sample workload cost matters most: $0.13.
- Hy-MT2-30B-A3B can replace Hy4 preview when lower sample workload cost matters most: $0.22.
- Hy-MT2-7B can replace Hy4 preview when lower sample workload cost matters most: $0.22.
- 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 $0.14 sample workload cost.
- GLM 5.3 Flash offers 1.31M context with $0.2 sample workload cost.
- DeepSeek V4 Flash 0731 · DeepSeek · #1
- MiMo-V2.5 · Xiaomi · #2
- Hy3 · Tencent · #3
- Nemotron 3 Ultra (free) · NVIDIA · #4
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