GPT-4o-mini Search Preview vs Mistral Small 3.1 24B Instruct
GPT-4o-mini Search Preview (2025) and Mistral Small 3.1 24B Instruct (2025) are compact production models from OpenAI and MistralAI. GPT-4o-mini Search Preview ships a 128k-token context window, while Mistral Small 3.1 24B Instruct ships a 128k-token context window. On pricing, Mistral Small 3.1 24B Instruct costs $0.10/1M input tokens versus $0.15/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Mistral Small 3.1 24B Instruct is ~50% cheaper at $0.10/1M; pay for GPT-4o-mini Search Preview only for provider fit.
Decision scorecard
Local evidence first| Signal | GPT-4o-mini Search Preview | Mistral Small 3.1 24B Instruct |
|---|---|---|
| Best for | provider-routed production | multimodal apps and provider-routed production |
| Decision fit | RAG, Long context, and Classification | RAG, Long context, and Vision |
| Context window | 128k | 128k |
| Cheapest output | $0.60/1M tokens | $0.30/1M tokens |
| Provider routes | 2 tracked | 6 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Local decision data tags GPT-4o-mini Search Preview for RAG, Long context, and Classification.
- Mistral Small 3.1 24B Instruct has the lower cheapest tracked output price at $0.30/1M tokens.
- Mistral Small 3.1 24B Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Mistral Small 3.1 24B Instruct uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Mistral Small 3.1 24B Instruct for RAG, Long context, and Vision.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
GPT-4o-mini Search Preview
$270
Cheapest tracked route/tier: OpenRouter
Mistral Small 3.1 24B Instruct
$155
Cheapest tracked route/tier: Together AI
Estimated monthly gap: $115. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Mistral Small 3.1 24B Instruct is $0.30/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Mistral Small 3.1 24B Instruct adds Vision and Multimodal in local capability data.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- GPT-4o-mini Search Preview is $0.30/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-02-26 | 2025-12-15 |
| Context window | 128k | 128k |
| Parameters | — | 24B |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Apache 2.0OSI-approved |
| Openness | Proprietary | Open source |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | 2023-10 | 2023-10 |
Pricing and availability
| Pricing attribute | GPT-4o-mini Search Preview | Mistral Small 3.1 24B Instruct |
|---|---|---|
| Input price | $0.15/1M tokens | $0.10/1M tokens |
| Output price | $0.60/1M tokens | $0.30/1M tokens |
| Providers |
Capabilities
| Capability | GPT-4o-mini Search Preview | Mistral Small 3.1 24B Instruct |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
Deep dive
The capability footprint differs most on vision: Mistral Small 3.1 24B Instruct and multimodal input: Mistral Small 3.1 24B Instruct. Both models share structured outputs, 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 $0.60/1M output tokens on the cheapest tracked provider, while Mistral Small 3.1 24B Instruct lists $0.10/1M input and $0.30/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Mistral Small 3.1 24B Instruct lower by about $0.13 per million blended tokens. Availability is 2 providers versus 6, so concentration risk also matters.
Choose GPT-4o-mini Search Preview when provider fit are central to the workload. Choose Mistral Small 3.1 24B Instruct when vision-heavy evaluation, lower input-token cost, 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 3.1 24B Instruct?
GPT-4o-mini Search Preview supports 128k tokens, while Mistral Small 3.1 24B Instruct 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 3.1 24B Instruct?
Mistral Small 3.1 24B Instruct is cheaper on tracked token pricing. GPT-4o-mini Search Preview costs $0.15/1M input and $0.60/1M output tokens. Mistral Small 3.1 24B Instruct costs $0.10/1M input and $0.30/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is GPT-4o-mini Search Preview or Mistral Small 3.1 24B Instruct open source?
GPT-4o-mini Search Preview is listed under Proprietary. Mistral Small 3.1 24B Instruct 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 3.1 24B Instruct?
Mistral Small 3.1 24B Instruct 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 3.1 24B Instruct?
Mistral Small 3.1 24B Instruct 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 3.1 24B Instruct?
GPT-4o-mini Search Preview is available on OpenRouter and Vercel AI Gateway. Mistral Small 3.1 24B Instruct is available on Cloudflare Workers AI, OpenRouter, Fireworks AI, NVIDIA NIM, and Together AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.