Tencent Hy3 Preview vs Llama Guard 2 8B
Tencent Hy3 Preview (2026) and Llama Guard 2 8B (2024) are frontier reasoning models from Tencent AI Lab and AI at Meta. Tencent Hy3 Preview ships a 262K-token context window, while Llama Guard 2 8B ships a 8K-token context window. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Tencent Hy3 Preview fits 33x more tokens; pick it for long-context work and Llama Guard 2 8B for tighter calls.
Specs
| Released | 2026-04-22 | 2024-04-18 |
| Context window | 262K | 8K |
| Parameters | 295B | 8B |
| Architecture | dense moe hybrid | decoder only |
| License | Proprietary | Open Source |
| Knowledge cutoff | - | - |
Pricing and availability
| Tencent Hy3 Preview | Llama Guard 2 8B | |
|---|---|---|
| Input price | - | $0.05/1M tokens |
| Output price | - | $0.25/1M tokens |
| Providers |
Capabilities
| Tencent Hy3 Preview | Llama Guard 2 8B | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on reasoning mode: Tencent Hy3 Preview, function calling: Tencent Hy3 Preview, and tool use: Tencent Hy3 Preview. Both models share the core language-model surface, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
Pricing coverage is uneven: Tencent Hy3 Preview has no token price sourced yet and Llama Guard 2 8B has $0.05/1M input tokens. Provider availability is 1 tracked routes versus 3. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Tencent Hy3 Preview when reasoning depth and larger context windows are central to the workload. Choose Llama Guard 2 8B when provider fit and broader provider choice are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency.
FAQ
Which has a larger context window, Tencent Hy3 Preview or Llama Guard 2 8B?
Tencent Hy3 Preview supports 262K tokens, while Llama Guard 2 8B supports 8K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Tencent Hy3 Preview or Llama Guard 2 8B open source?
Tencent Hy3 Preview is listed under Proprietary. Llama Guard 2 8B is listed under Open Source. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for reasoning mode, Tencent Hy3 Preview or Llama Guard 2 8B?
Tencent Hy3 Preview has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for function calling, Tencent Hy3 Preview or Llama Guard 2 8B?
Tencent Hy3 Preview has the clearer documented function calling signal in this comparison. If function calling is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for tool use, Tencent Hy3 Preview or Llama Guard 2 8B?
Tencent Hy3 Preview has the clearer documented tool use signal in this comparison. If tool use is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Tencent Hy3 Preview and Llama Guard 2 8B?
Tencent Hy3 Preview is available on OpenRouter. Llama Guard 2 8B is available on Fireworks AI, OctoAI API, and Replicate API. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-04-27. Data sourced from public model cards and provider documentation.