GPT-4o-mini Search Preview vs Mistral Small 4
GPT-4o-mini Search Preview (2025) and Mistral Small 4 (2026) are compact production models from OpenAI and MistralAI. GPT-4o-mini Search Preview ships a 128K-token context window, while Mistral Small 4 ships a 256k-token context window. On pricing, GPT-4o-mini Search Preview costs $0.15/1M input tokens versus $0.15/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Mistral Small 4 is safer overall; choose GPT-4o-mini Search Preview when provider fit matters.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-02-26 | 2026-03-16 |
| Context window | 128K | 256k |
| Parameters | — | 119B (6.5B active) |
| Architecture | decoder only | moe |
| License | Unknown | Apache 2.0 |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | GPT-4o-mini Search Preview | Mistral Small 4 |
|---|---|---|
| Input price | $0.15/1M tokens | $0.15/1M tokens |
| Output price | $0.6/1M tokens | $0.6/1M tokens |
| Providers |
Capabilities
| Capability | GPT-4o-mini Search Preview | Mistral Small 4 |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | No |
| Function calling | No | Yes |
| Tool use | No | Yes |
| 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 vision: Mistral Small 4, multimodal input: Mistral Small 4, function calling: Mistral Small 4, tool use: Mistral Small 4, and structured outputs: GPT-4o-mini Search Preview. 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.
For cost, GPT-4o-mini Search Preview lists $0.15/1M input and $0.6/1M output tokens, while Mistral Small 4 lists $0.15/1M input and $0.6/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts GPT-4o-mini Search Preview lower by about $0 per million blended tokens. Availability is 1 providers versus 2, so concentration risk also matters.
Choose GPT-4o-mini Search Preview when provider fit are central to the workload. Choose Mistral Small 4 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, GPT-4o-mini Search Preview or Mistral Small 4?
Mistral Small 4 supports 256k tokens, while GPT-4o-mini Search Preview supports 128K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, GPT-4o-mini Search Preview or Mistral Small 4?
GPT-4o-mini Search Preview is cheaper on tracked token pricing. GPT-4o-mini Search Preview costs $0.15/1M input and $0.6/1M output tokens. Mistral Small 4 costs $0.15/1M input and $0.6/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is GPT-4o-mini Search Preview or Mistral Small 4 open source?
GPT-4o-mini Search Preview is listed under Unknown. Mistral Small 4 is listed under Apache 2.0. 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 vision, GPT-4o-mini Search Preview or Mistral Small 4?
Mistral Small 4 has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, GPT-4o-mini Search Preview or Mistral Small 4?
Mistral Small 4 has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run GPT-4o-mini Search Preview and Mistral Small 4?
GPT-4o-mini Search Preview is available on OpenRouter. Mistral Small 4 is available on OpenRouter and 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.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.