Hunyuan Hy3 Preview vs Llama Guard 2 8B
Hunyuan Hy3 Preview (2026) and Llama Guard 2 8B (2024) are frontier reasoning models from Tencent AI Lab and AI at Meta. Hunyuan Hy3 Preview ships a 262k-token context window, while Llama Guard 2 8B ships a 8k-token context window. On pricing, Llama Guard 2 8B costs $0.05/1M input tokens versus $0.07/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Hunyuan Hy3 Preview fits 33x more tokens; pick it for long-context work and Llama Guard 2 8B for tighter calls.
Decision scorecard
Local evidence first| Signal | Hunyuan Hy3 Preview | Llama Guard 2 8B |
|---|---|---|
| Best for | reasoning-heavy apps, tool-calling agents, and provider-routed production | provider-routed production |
| Decision fit | Coding, RAG, and Agents | Classification |
| Context window | 262k | 8k |
| Cheapest output | $0.26/1M tokens | $0.25/1M tokens |
| Provider routes | 2 tracked | 3 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Hunyuan Hy3 Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Hunyuan Hy3 Preview uniquely exposes Reasoning and JSON / Tool use in local model data.
- Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
- Llama Guard 2 8B has the lower cheapest tracked output price at $0.25/1M tokens.
- Llama Guard 2 8B has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Llama Guard 2 8B for Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Hunyuan Hy3 Preview
$118
Cheapest tracked route/tier: OpenRouter
Llama Guard 2 8B
$103
Cheapest tracked route/tier: Replicate API
Estimated monthly gap: $15.30. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Hunyuan Hy3 Preview and Llama Guard 2 8B; plan for SDK, billing, or endpoint changes.
- Llama Guard 2 8B is $0.01/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning and JSON / Tool use before moving production traffic.
- No overlapping tracked provider route is sourced for Llama Guard 2 8B and Hunyuan Hy3 Preview; plan for SDK, billing, or endpoint changes.
- Hunyuan Hy3 Preview is $0.01/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Hunyuan Hy3 Preview adds Reasoning and JSON / Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-22 | 2024-04-18 |
| Context window | 262k | 8k |
| Parameters | 295B | 8B |
| Architecture | Dense + MoE Hybrid | Decoder Only |
| License | Tencent Hunyuan Community License | Llama 2 Community |
| Openness | Open weights | Open weights |
| Weights | Available | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | - | 2023-03 |
Pricing and availability
| Pricing attribute | Hunyuan Hy3 Preview | Llama Guard 2 8B |
|---|---|---|
| Input price | $0.07/1M tokens | $0.05/1M tokens |
| Output price | $0.26/1M tokens | $0.25/1M tokens |
| Providers |
Capabilities
| Capability | Hunyuan Hy3 Preview | Llama Guard 2 8B |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| JSON / Tool use | Yes | No |
| Structured outputs | No | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
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Last reviewed: 2026-07-11. Data sourced from public model cards and provider documentation.