Hunyuan Hy3 Preview vs Together AI - Llama 3 8B Lite
Hunyuan Hy3 Preview (2026) and Together AI - Llama 3 8B Lite (2025) are frontier reasoning models from Tencent AI Lab and AI at Meta. Hunyuan Hy3 Preview ships a 262k-token context window, while Together AI - Llama 3 8B Lite ships a 8k-token context window. 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 is ~52% cheaper at $0.07/1M; pay for Together AI - Llama 3 8B Lite only for provider fit.
Decision scorecard
Local evidence first| Signal | Hunyuan Hy3 Preview | Together AI - Llama 3 8B Lite |
|---|---|---|
| Best for | reasoning-heavy apps, tool-calling agents, and provider-routed production | tool-calling agents |
| Decision fit | Coding, RAG, and Agents | Agents, Classification, and JSON / Tool use |
| Context window | 262k | 8k |
| Cheapest output | $0.26/1M tokens | $0.10/1M tokens |
| Provider routes | 2 tracked | 1 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Hunyuan Hy3 Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Hunyuan Hy3 Preview has broader tracked provider coverage for fallback and procurement flexibility.
- Hunyuan Hy3 Preview uniquely exposes Reasoning in local model data.
- Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
- Together AI - Llama 3 8B Lite has the lower cheapest tracked output price at $0.10/1M tokens.
- Together AI - Llama 3 8B Lite uniquely exposes Structured outputs in local model data.
- Local decision data tags Together AI - Llama 3 8B Lite for Agents, Classification, and JSON / Tool use.
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
Together AI - Llama 3 8B Lite
$105
Cheapest tracked route/tier: Together AI
Estimated monthly gap: $12.80. 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 Together AI - Llama 3 8B Lite; plan for SDK, billing, or endpoint changes.
- Together AI - Llama 3 8B Lite is $0.16/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning before moving production traffic.
- Together AI - Llama 3 8B Lite adds Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Together AI - Llama 3 8B Lite and Hunyuan Hy3 Preview; plan for SDK, billing, or endpoint changes.
- Hunyuan Hy3 Preview is $0.16/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Structured outputs before moving production traffic.
- Hunyuan Hy3 Preview adds Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-22 | 2025-07-15 |
| Context window | 262k | 8k |
| Parameters | 295B | 8B |
| Architecture | dense moe hybrid | decoder only |
| License | Tencent Hunyuan Community License | Llama 3 Community |
| Openness | Open weights | Open weights |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | - | 2024-03 |
Pricing and availability
| Pricing attribute | Hunyuan Hy3 Preview | Together AI - Llama 3 8B Lite |
|---|---|---|
| Input price | $0.07/1M tokens | $0.10/1M tokens |
| Output price | $0.26/1M tokens | $0.10/1M tokens |
| Providers |
Capabilities
| Capability | Hunyuan Hy3 Preview | Together AI - Llama 3 8B Lite |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | No | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on reasoning mode: Hunyuan Hy3 Preview and structured outputs: Together AI - Llama 3 8B Lite. Both models share function calling and tool use, 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.
For cost, Hunyuan Hy3 Preview lists $0.07/1M input and $0.26/1M output tokens on the cheapest tracked provider, while Together AI - Llama 3 8B Lite lists $0.10/1M input and $0.10/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Together AI - Llama 3 8B Lite lower by about $0.02 per million blended tokens. Availability is 2 providers versus 1, so concentration risk also matters.
Choose Hunyuan Hy3 Preview when reasoning depth, larger context windows, and lower input-token cost are central to the workload. Choose Together AI - Llama 3 8B Lite when provider fit are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, Hunyuan Hy3 Preview or Together AI - Llama 3 8B Lite?
Hunyuan Hy3 Preview supports 262k tokens, while Together AI - Llama 3 8B Lite supports 8k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Hunyuan Hy3 Preview or Together AI - Llama 3 8B Lite?
Together AI - Llama 3 8B Lite is cheaper on tracked token pricing. Hunyuan Hy3 Preview costs $0.07/1M input and $0.26/1M output tokens. Together AI - Llama 3 8B Lite costs $0.10/1M input and $0.10/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Hunyuan Hy3 Preview or Together AI - Llama 3 8B Lite open source?
Hunyuan Hy3 Preview is listed under Tencent Hunyuan Community License. Together AI - Llama 3 8B Lite is listed under Llama 3 Community. 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, Hunyuan Hy3 Preview or Together AI - Llama 3 8B Lite?
Hunyuan 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, Hunyuan Hy3 Preview or Together AI - Llama 3 8B Lite?
Both Hunyuan Hy3 Preview and Together AI - Llama 3 8B Lite expose function calling. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Where can I run Hunyuan Hy3 Preview and Together AI - Llama 3 8B Lite?
Hunyuan Hy3 Preview is available on OpenRouter and Tencent Cloud TI Platform. Together AI - Llama 3 8B Lite is available on Together AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-06-07. Data sourced from public model cards and provider documentation.