Magistral Small 2506 vs Nemotron 3 Super-120B-A12B
Magistral Small 2506 (2025) and Nemotron 3 Super-120B-A12B (2026) are frontier reasoning models from MistralAI and NVIDIA AI. Magistral Small 2506 ships a 128k-token context window, while Nemotron 3 Super-120B-A12B ships a 1.05m-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. It focuses on practical selection signals rather than broad model-family marketing.
Nemotron 3 Super-120B-A12B fits 8x more tokens; pick it for long-context work and Magistral Small 2506 for tighter calls.
Decision scorecard
Local evidence first| Signal | Magistral Small 2506 | Nemotron 3 Super-120B-A12B |
|---|---|---|
| Best for | reasoning-heavy apps | long-context analysis and provider-routed production |
| Decision fit | Long context | RAG, Long context, and Classification |
| Context window | 128k | 1.05m |
| Cheapest output | - | $0.45/1M tokens |
| Provider routes | 1 tracked | 6 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Magistral Small 2506 uniquely exposes Reasoning in local model data.
- Local decision data tags Magistral Small 2506 for Long context.
- Nemotron 3 Super-120B-A12B has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Nemotron 3 Super-120B-A12B has broader tracked provider coverage for fallback and procurement flexibility.
- Nemotron 3 Super-120B-A12B uniquely exposes Structured outputs in local model data.
- Local decision data tags Nemotron 3 Super-120B-A12B for RAG, Long context, and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Magistral Small 2506
Unavailable
No complete token price in local provider data
Nemotron 3 Super-120B-A12B
$185
Cheapest tracked route/tier: OpenRouter
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- Provider overlap exists on NVIDIA NIM; start route-level A/B tests there.
- Check replacement coverage for Reasoning before moving production traffic.
- Nemotron 3 Super-120B-A12B adds Structured outputs in local capability data.
- Provider overlap exists on NVIDIA NIM; start route-level A/B tests there.
- Check replacement coverage for Structured outputs before moving production traffic.
- Magistral Small 2506 adds Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-06-10 | 2026-03-11 |
| Context window | 128k | 1.05m |
| Parameters | 24B | 120B |
| Architecture | decoder only | decoder only |
| License | Proprietary | Unknown |
| Knowledge cutoff | 2025-06 | - |
Pricing and availability
| Pricing attribute | Magistral Small 2506 | Nemotron 3 Super-120B-A12B |
|---|---|---|
| Input price | - | $0.09/1M tokens |
| Output price | - | $0.45/1M tokens |
| Providers |
Capabilities
| Capability | Magistral Small 2506 | Nemotron 3 Super-120B-A12B |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| Function calling | No | No |
| Tool use | No | No |
| 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: Magistral Small 2506 and structured outputs: Nemotron 3 Super-120B-A12B. 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: Magistral Small 2506 has no token price sourced yet and Nemotron 3 Super-120B-A12B has $0.09/1M input tokens. Provider availability is 1 tracked routes versus 6. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Magistral Small 2506 when reasoning depth are central to the workload. Choose Nemotron 3 Super-120B-A12B 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. 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, Magistral Small 2506 or Nemotron 3 Super-120B-A12B?
Nemotron 3 Super-120B-A12B supports 1.05m tokens, while Magistral Small 2506 supports 128k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Magistral Small 2506 or Nemotron 3 Super-120B-A12B open source?
Magistral Small 2506 is listed under Proprietary. Nemotron 3 Super-120B-A12B is listed under Unknown. 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, Magistral Small 2506 or Nemotron 3 Super-120B-A12B?
Magistral Small 2506 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 structured outputs, Magistral Small 2506 or Nemotron 3 Super-120B-A12B?
Nemotron 3 Super-120B-A12B 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 Magistral Small 2506 and Nemotron 3 Super-120B-A12B?
Magistral Small 2506 is available on NVIDIA NIM. Nemotron 3 Super-120B-A12B is available on Cloudflare Workers AI, DeepInfra, NVIDIA NIM, OpenRouter, and Fireworks AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Magistral Small 2506 over Nemotron 3 Super-120B-A12B?
Nemotron 3 Super-120B-A12B fits 8x more tokens; pick it for long-context work and Magistral Small 2506 for tighter calls. If your workload also depends on reasoning depth, start with Magistral Small 2506; if it depends on long-context analysis, run the same evaluation with Nemotron 3 Super-120B-A12B.
Continue comparing
Last reviewed: 2026-06-01. Data sourced from public model cards and provider documentation.