LLM Reference

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 ~230% cheaper at $0.02/1M; pay for Hunyuan Hy3 Preview only for reasoning depth.

Decision scorecard

Local evidence first
SignalHunyuan Hy3 PreviewLlama 3 8B Instruct
Best forreasoning-heavy apps, tool-calling agents, and provider-routed productionprovider-routed production
Decision fitCoding, RAG, and AgentsCoding, Classification, and JSON / Tool use
Context window262k8k
Cheapest output$0.26/1M tokens$0.05/1M tokens
Provider routes2 tracked17 tracked
Shared benchmarksGoogle-Proof Q&A leader1 shared

Decision tradeoffs

Choose Hunyuan Hy3 Preview when...
  • 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 and JSON / Tool use in local model data.
  • Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
Choose Llama 3 8B Instruct when...
  • Llama 3 8B Instruct has the lower cheapest tracked output price at $0.05/1M tokens.
  • Llama 3 8B Instruct has broader tracked provider coverage for fallback and route 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.

Lower estimate Llama 3 8B Instruct

Hunyuan Hy3 Preview

$118

Cheapest tracked route/tier: OpenRouter

Llama 3 8B Instruct

$28.50

Cheapest tracked route/tier: DeepInfra

Estimated monthly gap: $89.30. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Hunyuan Hy3 Preview -> Llama 3 8B Instruct
  • Provider overlap exists on OpenRouter; start route-level A/B tests there.
  • Llama 3 8B Instruct is $0.21/1M 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.
  • Llama 3 8B Instruct adds Structured outputs in local capability data.
Llama 3 8B Instruct -> Hunyuan Hy3 Preview
  • Provider overlap exists on OpenRouter; start route-level A/B tests there.
  • Hunyuan Hy3 Preview is $0.21/1M 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 and JSON / Tool use in local capability data.

Specs

Specification
Released2026-04-222024-04-18
Context window262k8k
Parameters295B8B
ArchitectureDense + MoE HybridDecoder Only
LicenseTencent Hunyuan Community LicenseLlama 3 Community
OpennessOpen weightsOpen weights
WeightsAvailableAvailable
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: conditional
Knowledge cutoff-2023-03

Pricing and availability

Pricing attributeHunyuan Hy3 PreviewLlama 3 8B Instruct
Input price$0.07/1M tokens$0.02/1M tokens
Output price$0.26/1M tokens$0.05/1M tokens
Providers
OpenRouterTencent Cloud TI Platform
AWS BedrockDeepInfraOctoAI API (Deprecated)Fireworks AIAlibaba Cloud PAI-EASBaseten API

Capabilities

CapabilityHunyuan Hy3 PreviewLlama 3 8B Instruct
VisionNoNo
MultimodalNoNo
ReasoningYesNo
JSON / Tool useYesNo
Structured outputsNoYes
Code executionNoNo
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

BenchmarkHunyuan Hy3 PreviewLlama 3 8B Instruct
Google-Proof Q&A87.244.8

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Last reviewed: 2026-07-11. Data sourced from public model cards and provider documentation.