Hunyuan Hy3 Preview vs Llama 3 8B Instruct
Hunyuan Hy3 Preview (2026) and Llama 3 8B Instruct (2024) are frontier reasoning models from Tencent AI Lab and AI at Meta. Hunyuan Hy3 Preview ships a 262k-token context window, while Llama 3 8B Instruct ships a 8k-token context window. On Google-Proof Q&A, Hunyuan Hy3 Preview leads by 42.4 pts. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Llama 3 8B Instruct is ~120% cheaper at $0.03/1M; pay for Hunyuan Hy3 Preview only for reasoning depth.
Decision scorecard
Local evidence first| Signal | Hunyuan Hy3 Preview | Llama 3 8B Instruct |
|---|---|---|
| Best for | reasoning-heavy apps, tool-calling agents, and provider-routed production | provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, Classification, and JSON / Tool use |
| Context window | 262k | 8k |
| Cheapest output | $0.26/1M tokens | $0.04/1M tokens |
| Provider routes | 2 tracked | 17 tracked |
| Shared benchmarks | Google-Proof Q&A leader | 1 rows |
Decision tradeoffs
- Hunyuan Hy3 Preview holds a shared-benchmark lead on Google-Proof Q&A, ahead by 42.4 points.
- Hunyuan Hy3 Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Hunyuan Hy3 Preview uniquely exposes Reasoning, Function calling, and Tool use in local model data.
- Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
- Llama 3 8B Instruct has the lower cheapest tracked output price at $0.04/1M tokens.
- Llama 3 8B Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Llama 3 8B Instruct uniquely exposes Structured outputs in local model data.
- Local decision data tags Llama 3 8B Instruct for Coding, 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
Llama 3 8B Instruct
$34.00
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $83.80. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Llama 3 8B Instruct is $0.22/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning, Function calling, and Tool use before moving production traffic.
- Llama 3 8B Instruct adds Structured outputs in local capability data.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Hunyuan Hy3 Preview is $0.22/1M 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, Function calling, and 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 3 Community |
| Openness | Open weights | Open weights |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | - | 2023-03 |
Pricing and availability
| Pricing attribute | Hunyuan Hy3 Preview | Llama 3 8B Instruct |
|---|---|---|
| Input price | $0.07/1M tokens | $0.03/1M tokens |
| Output price | $0.26/1M tokens | $0.04/1M tokens |
| Providers |
Capabilities
| Capability | Hunyuan Hy3 Preview | Llama 3 8B Instruct |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | No | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Hunyuan Hy3 Preview | Llama 3 8B Instruct |
|---|---|---|
| Google-Proof Q&A | 87.2 | 44.8 |
Deep dive
On shared benchmark coverage, Google-Proof Q&A has Hunyuan Hy3 Preview at 87.2 and Llama 3 8B Instruct at 44.8, with Hunyuan Hy3 Preview ahead by 42.4 points. The largest visible gap is 42.4 points on Google-Proof Q&A, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint differs most on reasoning mode: Hunyuan Hy3 Preview, function calling: Hunyuan Hy3 Preview, tool use: Hunyuan Hy3 Preview, and structured outputs: Llama 3 8B Instruct. 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.
For cost, Hunyuan Hy3 Preview lists $0.07/1M input and $0.26/1M output tokens on the cheapest tracked provider, while Llama 3 8B Instruct lists $0.03/1M input and $0.04/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Llama 3 8B Instruct lower by about $0.09 per million blended tokens. Availability is 2 providers versus 17, so concentration risk also matters.
Choose Hunyuan Hy3 Preview when reasoning depth and larger context windows are central to the workload. Choose Llama 3 8B Instruct when provider fit, lower input-token cost, 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.
FAQ
Which has a larger context window, Hunyuan Hy3 Preview or Llama 3 8B Instruct?
Hunyuan Hy3 Preview supports 262k tokens, while Llama 3 8B Instruct 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 Llama 3 8B Instruct?
Llama 3 8B Instruct is cheaper on tracked token pricing. Hunyuan Hy3 Preview costs $0.07/1M input and $0.26/1M output tokens. Llama 3 8B Instruct costs $0.03/1M input and $0.04/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Hunyuan Hy3 Preview or Llama 3 8B Instruct open source?
Hunyuan Hy3 Preview is listed under Tencent Hunyuan Community License. Llama 3 8B Instruct 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 Llama 3 8B Instruct?
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 Llama 3 8B Instruct?
Hunyuan 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.
Where can I run Hunyuan Hy3 Preview and Llama 3 8B Instruct?
Hunyuan Hy3 Preview is available on OpenRouter and Tencent Cloud TI Platform. Llama 3 8B Instruct is available on AWS Bedrock, DeepInfra, OctoAI API (Deprecated), Fireworks AI, and Alibaba Cloud PAI-EAS. 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.