Hy3 preview is $1.18 cheaper per 1M input tokens (94.7% lower; 18.9x difference).
API cost decision in 10 seconds
Hy3 preview vs GPT-5.1 Chat
Pick Hy3 preview when budget and context both matter.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Hy3 preview when budget and context both matter.
On the standard 1M input plus 500K output workload, Hy3 preview is estimated at $0.2 vs $6.25 for GPT-5.1 Chat, saving $6.05 (96.9% lower).
Cost-first pickHy3 preview
Context-first pickHy3 preview
Sample savings$6.0596.9%
10x traffic gap$60.54
Hy3 preview is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $60.54. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Hy3 preview stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Hy3 preview | GPT-5.1 Chat |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Hy3 preview | $0.46 | $11.25 |
| Balanced workload | 1M input + 1M output | Hy3 preview | $0.33 | $11.25 |
| Output-heavy chatbot | 1M input + 5M output | Hy3 preview | $1.37 | $51.25 |
Hy3 preview is $9.74 cheaper per 1M output tokens (97.4% lower; 38.5x difference).
Hy3 preview has 134.14K more context (2.05x larger).
Hy3 preview is $6.05 cheaper on the standard workload (96.9% 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
Hy3 preview has the lower input price; Hy3 preview has the lower output price; Hy3 preview offers the larger context window. For the 1M input plus 500K output sample, Hy3 preview is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.2 for Hy3 preview and $6.25 for GPT-5.1 Chat.
Choose Hy3 preview when you care most about lower input-token price, lower output-token price, and larger context window.
Choose GPT-5.1 Chat when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
- On the standard 1M input plus 500K output workload, Hy3 preview is estimated at $0.2 vs $6.25 for GPT-5.1 Chat, saving $6.05 (96.9% lower).
- Hy3 preview is $6.05 cheaper on the standard workload (96.9% lower).
- Hy3 preview is $1.18 cheaper per 1M input tokens (94.7% lower; 18.9x difference).
- Hy3 preview is $9.74 cheaper per 1M output tokens (97.4% lower; 38.5x difference).
- Hy3 preview has 134.14K more context (2.05x larger).
| Feature | Hy3 preview (Tencent) | GPT-5.1 Chat (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.066 | $1.25 |
| Completion Price per 1M tokens | $0.26 | $10 |
| Sample Workload Cost 1M input + 500K output | $0.2 | $6.25 |
| Context Window | 262.14K | 128K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Hy3 preview | On the standard 1M input plus 500K output workload, Hy3 preview is estimated at $0.2 vs $6.25 for GPT-5.1 Chat, saving $6.05 (96.9% lower). |
| High-volume input processing | Hy3 preview | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Hy3 preview | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Hy3 preview | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- gpt-oss-120b (free) can replace GPT-5.1 Chat when lower sample workload cost matters most: $0.
- gpt-oss-20b (free) can replace GPT-5.1 Chat when lower sample workload cost matters most: $0.
- gpt-oss-20b can replace GPT-5.1 Chat when lower sample workload cost matters most: $0.1.
- gpt-oss-120b can replace GPT-5.1 Chat when lower sample workload cost matters most: $0.13.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsTencent catalog
Review all tracked Tencent models before deciding whether this matchup is the right shortlist.
Open Tencent modelsOpenAI catalog
Check other OpenAI models with comparable pricing, context, or release timing.
Open OpenAI modelsHy3 preview is a high-efficiency Mixture-of-Experts model from Tencent designed for agentic workflows and production use. It supports configurable reasoning levels across disabled, low, and high modes, allowing it to...
GPT-5.1 Chat (AKA Instant is the fast, lightweight member of the 5.1 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning to selectively “think” on...