Llama 2 13B Chat vs Nemotron 3 Ultra
Llama 2 13B Chat (2023) and Nemotron 3 Ultra (2024) are compact production models from AI at Meta and NVIDIA AI. Llama 2 13B Chat ships a 4k-token context window, while Nemotron 3 Ultra ships a 128k-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.
Nemotron 3 Ultra fits 32x more tokens; pick it for long-context work and Llama 2 13B Chat for tighter calls.
Decision scorecard
Local evidence first| Signal | Llama 2 13B Chat | Nemotron 3 Ultra |
|---|---|---|
| Best for | provider-routed production | general production evaluation |
| Decision fit | Coding, Classification, and JSON / Tool use | Long context |
| Context window | 4k | 128k |
| Cheapest output | $0.50/1M tokens | - |
| Provider routes | 11 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Llama 2 13B Chat has broader tracked provider coverage for fallback and procurement flexibility.
- Llama 2 13B Chat uniquely exposes Structured outputs in local model data.
- Local decision data tags Llama 2 13B Chat for Coding, Classification, and JSON / Tool use.
- Nemotron 3 Ultra has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags Nemotron 3 Ultra for Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Llama 2 13B Chat
$205
Cheapest tracked route/tier: Replicate API
Nemotron 3 Ultra
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 Llama 2 13B Chat and Nemotron 3 Ultra; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Structured outputs before moving production traffic.
- No overlapping tracked provider route is sourced for Nemotron 3 Ultra and Llama 2 13B Chat; plan for SDK, billing, or endpoint changes.
- Llama 2 13B Chat adds Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2023-07-18 | 2024-09-10 |
| Context window | 4k | 128k |
| Parameters | 13B | 550B (55B active) |
| Architecture | decoder only | decoder only |
| License | Open Source | Proprietary |
| Knowledge cutoff | 2022-09 | - |
Pricing and availability
| Pricing attribute | Llama 2 13B Chat | Nemotron 3 Ultra |
|---|---|---|
| Input price | $0.10/1M tokens | - |
| Output price | $0.50/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Llama 2 13B Chat | Nemotron 3 Ultra |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | Yes | No |
| 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 structured outputs: Llama 2 13B Chat. 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: Llama 2 13B Chat has $0.10/1M input tokens and Nemotron 3 Ultra has no token price sourced yet. Provider availability is 11 tracked routes versus 0. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Llama 2 13B Chat when provider fit and broader provider choice are central to the workload. Choose Nemotron 3 Ultra when long-context analysis and larger context windows 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. It also helps separate model capability from provider packaging, which can change cost and latency. For teams standardizing a stack, that distinction is often the difference between a benchmark win and a reliable deployment.
FAQ
Which has a larger context window, Llama 2 13B Chat or Nemotron 3 Ultra?
Nemotron 3 Ultra supports 128k tokens, while Llama 2 13B Chat supports 4k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Llama 2 13B Chat or Nemotron 3 Ultra open source?
Llama 2 13B Chat is listed under Open Source. Nemotron 3 Ultra is listed under Proprietary. 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 structured outputs, Llama 2 13B Chat or Nemotron 3 Ultra?
Llama 2 13B Chat 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 Llama 2 13B Chat and Nemotron 3 Ultra?
Llama 2 13B Chat is available on Alibaba Cloud PAI-EAS, AWS Bedrock, Microsoft Foundry, GCP Vertex AI, and DeepInfra. Nemotron 3 Ultra is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Llama 2 13B Chat over Nemotron 3 Ultra?
Nemotron 3 Ultra fits 32x more tokens; pick it for long-context work and Llama 2 13B Chat for tighter calls. If your workload also depends on provider fit, start with Llama 2 13B Chat; if it depends on long-context analysis, run the same evaluation with Nemotron 3 Ultra.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.