Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoning from...
Model details →Mistral: Mistral Small 4 (batch) vs Union Alpha
Union Alpha wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Union Alpha is a multimodal model built for research, coding, and agentic workflows, while delivering frontier-level performance across a broad range of general-purpose tasks. Union Alpha is a stealth model....
Model details →Side-by-side comparison
| Capability | Mistral: Mistral Small 4 (batch) | Union Alpha | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 262K | 262K | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.07 | $0.00 | 🏆 Union Alpha |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.30 | $0.00 | 🏆 Union Alpha |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | — | 🏆 Mistral: Mistral Small 4 (batch) |
Frequently asked questions
Is Mistral: Mistral Small 4 (batch) better than Union Alpha?
Union Alpha wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Mistral: Mistral Small 4 (batch) and Union Alpha?
Input: $0.07 vs $0.00 per 1M tokens. Output: $0.30 vs $0.00 per 1M tokens.
What context windows do Mistral: Mistral Small 4 (batch) and Union Alpha support?
Mistral: Mistral Small 4 (batch) supports up to 262K tokens. Union Alpha supports up to 262K tokens.
Do both Mistral: Mistral Small 4 (batch) and Union Alpha support tool calling?
Mistral: Mistral Small 4 (batch): yes. Union Alpha: yes.