Mistral Large 3
Mistral AI's flagship dense model via the Vercel AI Gateway: strong general reasoning, multilingual fluency, and reliable function calling at a 256k context window. Available serverless on just4o.chat at the base tier. Uses 2 base requests per send before length multipliers. Does not support web search or image input.
You always get the exact model you pick — we never silently route you to another.
About Mistral Large 3
Mistral Large 3 is the French lab's flagship dense model, and on just4o.chat it runs through the Vercel AI Gateway under the mistral/mistral-large-3 route. It pairs strong general reasoning with the multilingual fluency Mistral is known for — European languages in particular — and reliable function calling for tool-driven workflows. A 256k-token context window is roomy enough for long documents, multi-file code, or extended chats without truncation, and at $0.50 per million input and $1.50 per million output tokens it sits at the affordable end of frontier-class models. On just4o.chat it is a base-tier model available on every plan, billed at 2 base requests per send before length multipliers. One practical note worth flagging up front: like the rest of the Mistral lineup here, it has no native web search, and it is text-only — no image input. For teams that want a capable, cost-disciplined generalist with first-rate multilingual handling, it is an easy default.
Best for
- General-purpose assistance — drafting, summarization, and Q&A across long documents
- Multilingual workflows, especially European languages, including translation and localization
- Tool-using and function-calling applications that need reliable structured output
- Long-context tasks up to 256k tokens, such as analyzing large files or transcripts
- Cost-sensitive production workloads that still want frontier-class reasoning
Specifications
| Provider | Mistral |
|---|---|
| Released | 2025-12 |
| Intelligence | High |
| Speed | Fast |
| Context window | 256,000 tokens |
| Knowledge cutoff | Not officially published |
| Input price | $0.50 / 1M tokens |
| Output price | $1.50 / 1M tokens |
| Request cost | 2 base requests |
| Plan tier | Base |
| Input | Text |
| Output | Text |
| Features | 2 base requests per send before length multipliers, Function calling supported, Served through the Vercel AI Gateway (mistral/mistral-large-3), Mistral applies zero data retention to gateway traffic |
| Model ID | mistral-large-3 |
Frequently asked questions
Through the Vercel AI Gateway, using the OpenAI-compatible Chat Completions endpoint under the mistral/mistral-large-3 model route. Mistral applies zero data retention to gateway traffic.
$0.50 per million input tokens and $1.50 per million output tokens at provider reference pricing. On just4o.chat it is a base model that uses 2 base requests per send before length multipliers.
256,000 tokens, large enough for long documents, extended conversations, or multi-file code in a single request.
No. Mistral models on just4o.chat do not have native web search, and Mistral Large 3 is text-only. For vision, use Mistral Medium 3.5 or Ministral 14B.
Anyone wanting a strong, affordable generalist with excellent multilingual performance and dependable function calling, without paying premium-tier rates.