Gemini 2.5 Pro Preview 05-06 vs Magistral Small 2506
Gemini 2.5 Pro Preview 05-06 (2025) and Magistral Small 2506 (2026) are frontier reasoning models from Google DeepMind and MistralAI. Gemini 2.5 Pro Preview 05-06 ships a 1M-token context window, while Magistral Small 2506 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.
Gemini 2.5 Pro Preview 05-06 fits 8x more tokens; pick it for long-context work and Magistral Small 2506 for tighter calls.
Specs
| Released | 2025-05-06 | 2026-01-15 |
| Context window | 1M | 128K |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Unknown | 1 |
| Knowledge cutoff | - | - |
Pricing and availability
| Gemini 2.5 Pro Preview 05-06 | Magistral Small 2506 | |
|---|---|---|
| Input price | $1.25/1M tokens | - |
| Output price | $10/1M tokens | - |
| Providers |
Capabilities
| Gemini 2.5 Pro Preview 05-06 | Magistral Small 2506 | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
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: Gemini 2.5 Pro Preview 05-06. 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: Gemini 2.5 Pro Preview 05-06 has $1.25/1M input tokens and Magistral Small 2506 has no token price sourced yet. Provider availability is 1 tracked routes versus 1. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Gemini 2.5 Pro Preview 05-06 when long-context analysis and larger context windows are central to the workload. Choose Magistral Small 2506 when reasoning depth 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.
FAQ
Which has a larger context window, Gemini 2.5 Pro Preview 05-06 or Magistral Small 2506?
Gemini 2.5 Pro Preview 05-06 supports 1M 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 Gemini 2.5 Pro Preview 05-06 or Magistral Small 2506 open source?
Gemini 2.5 Pro Preview 05-06 is listed under Unknown. Magistral Small 2506 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 reasoning mode, Gemini 2.5 Pro Preview 05-06 or Magistral Small 2506?
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, Gemini 2.5 Pro Preview 05-06 or Magistral Small 2506?
Gemini 2.5 Pro Preview 05-06 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 Gemini 2.5 Pro Preview 05-06 and Magistral Small 2506?
Gemini 2.5 Pro Preview 05-06 is available on OpenRouter. Magistral Small 2506 is available on NVIDIA NIM. Provider coverage can affect latency, region availability, compliance posture, and fallback options. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
When should I pick Gemini 2.5 Pro Preview 05-06 over Magistral Small 2506?
Gemini 2.5 Pro Preview 05-06 fits 8x more tokens; pick it for long-context work and Magistral Small 2506 for tighter calls. If your workload also depends on long-context analysis, start with Gemini 2.5 Pro Preview 05-06; if it depends on reasoning depth, run the same evaluation with Magistral Small 2506.
Continue comparing
Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.