Together AI - Llama 3 8B Lite vs Mistral Medium 3 Instruct
Together AI - Llama 3 8B Lite (2025) and Mistral Medium 3 Instruct (2025) are compact production models from AI at Meta and MistralAI. Together AI - Llama 3 8B Lite ships a 8K-token context window, while Mistral Medium 3 Instruct ships a 128K-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.
Mistral Medium 3 Instruct fits 16x more tokens; pick it for long-context work and Together AI - Llama 3 8B Lite for tighter calls.
Decision scorecard
Local evidence first| Signal | Together AI - Llama 3 8B Lite | Mistral Medium 3 Instruct |
|---|---|---|
| Decision fit | Agents, Classification, and JSON / Tool use | Long context |
| Context window | 8K | 128K |
| Cheapest output | $0.1/1M tokens | - |
| Provider routes | 1 tracked | 2 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Together AI - Llama 3 8B Lite uniquely exposes Function calling, Tool use, and Structured outputs in local model data.
- Local decision data tags Together AI - Llama 3 8B Lite for Agents, Classification, and JSON / Tool use.
- Mistral Medium 3 Instruct has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Mistral Medium 3 Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Mistral Medium 3 Instruct for Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Together AI - Llama 3 8B Lite
$105
Cheapest tracked route: Together AI
Mistral Medium 3 Instruct
Unavailable
No complete token price in local provider data
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Together AI - Llama 3 8B Lite and Mistral Medium 3 Instruct; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Function calling, Tool use, and Structured outputs before moving production traffic.
- No overlapping tracked provider route is sourced for Mistral Medium 3 Instruct and Together AI - Llama 3 8B Lite; plan for SDK, billing, or endpoint changes.
- Together AI - Llama 3 8B Lite adds Function calling, Tool use, and Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-07-15 | 2025-10-01 |
| Context window | 8K | 128K |
| Parameters | 8B | — |
| Architecture | decoder only | decoder only |
| License | Open Source | 1 |
| Knowledge cutoff | 2024-03 | - |
Pricing and availability
| Pricing attribute | Together AI - Llama 3 8B Lite | Mistral Medium 3 Instruct |
|---|---|---|
| Input price | $0.1/1M tokens | - |
| Output price | $0.1/1M tokens | - |
| Providers |
Capabilities
| Capability | Together AI - Llama 3 8B Lite | Mistral Medium 3 Instruct |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | Yes | No |
| Code execution | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on function calling: Together AI - Llama 3 8B Lite, tool use: Together AI - Llama 3 8B Lite, and structured outputs: Together AI - Llama 3 8B Lite. 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: Together AI - Llama 3 8B Lite has $0.1/1M input tokens and Mistral Medium 3 Instruct has no token price sourced yet. Provider availability is 1 tracked routes versus 2. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Together AI - Llama 3 8B Lite when provider fit are central to the workload. Choose Mistral Medium 3 Instruct when long-context analysis, larger context windows, 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.
FAQ
Which has a larger context window, Together AI - Llama 3 8B Lite or Mistral Medium 3 Instruct?
Mistral Medium 3 Instruct supports 128K 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.
Is Together AI - Llama 3 8B Lite or Mistral Medium 3 Instruct open source?
Together AI - Llama 3 8B Lite is listed under Open Source. Mistral Medium 3 Instruct is listed under 1. 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 function calling, Together AI - Llama 3 8B Lite or Mistral Medium 3 Instruct?
Together AI - Llama 3 8B Lite 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, Together AI - Llama 3 8B Lite or Mistral Medium 3 Instruct?
Together AI - Llama 3 8B Lite 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.
Which is better for structured outputs, Together AI - Llama 3 8B Lite or Mistral Medium 3 Instruct?
Together AI - Llama 3 8B Lite has the clearer documented structured outputs signal in this comparison. If structured outputs is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Together AI - Llama 3 8B Lite and Mistral Medium 3 Instruct?
Together AI - Llama 3 8B Lite is available on Together AI. Mistral Medium 3 Instruct is available on NVIDIA NIM and Mistral AI Studio. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.