MAFrance · founded Apr 28, 2023
Mistral AI: all AI models and prices in reais
About CertuAI: CertuAI is the AI that answers a small business's WhatsApp, Instagram and Messenger 24/7, with a built-in CRM, and is a Tech Provider on Meta's WhatsApp Business Platform. Paid plans start at US$ 75 a month, with no lock-in. Create my agent
Mistral AI has 10 models in the catalog, 7 with an official price. The cheapest per WhatsApp conversation is Ministral 3 (3B), at R$ 0.041, and the most expensive is Mistral Medium 3.5, at R$ 0.71.
Summary in 3 facts
- Mistral AI has 10 models in the catalog, 7 with an official price.
- You don't need to choose a model, count tokens or set up a server.
- CertuAI builds an AI agent that answers your customers on WhatsApp through Meta's official API, using what your business knows how to answer.
By the numbers
| Number | What it means |
|---|---|
| 10 templates | Mistral AI has 10 models in the catalog, 7 with an official price. |
| US$ 75 per month | The Start plan costs US$ 75 per month and already comes with 1,600 responses. |
| R$ 4,9892 | Real at the Central Bank's PTAX selling rate of Oct 9, 2026: R$ 4.9892 per dollar. |
| 10 responses | The conversation math: 10 agent replies, each reading 8,000 input tokens (instructions, what the company knows and the conversation history) and writing 300 output tokens. |
| R$ 72 | In a CertuAI measurement from Aug 5, 2026, with two real businesses on Gemini, the cost came to between R$ 72 and R$ 77 per 10 thousand messages, below this estimate. |
Mistral AI models, from cheapest to most expensive
Click a column title to re-sort.
| Template | Input | Output | Conversation2 | Context | Reads | LMArena |
|---|---|---|---|---|---|---|
| Ministral 3 (3B) | R$ 0,50 | R$ 0,50 | R$ 0,041 | 256K | text and image | no data |
| Ministral 3 (8B) | R$ 0,75 | R$ 0,75 | R$ 0,062 | 256K | text and image | no data |
| Mistral Small 4 | R$ 0,75 | R$ 2,99 | R$ 0,069 | 256K | text and image | no data |
| Ministral 3 (14B) | R$ 1,00 | R$ 1,00 | R$ 0,083 | 256K | text and image | no data |
| Codestral | R$ 1,50 | R$ 4,49 | R$ 0,13 | 128K | text | no data |
| Mistral Large 3 | R$ 2,49 | R$ 7,48 | R$ 0,22 | 256K | text and image | 143º |
| Mistral Medium 3.5 | R$ 7,48 | R$ 37,42 | R$ 0,71 | 256K | text and image | 117º |
| Mistral-7B-Instruct-v0.1 open weights | depends on where it runs | no data | text | no data | ||
| Mistral-7B-Instruct-v0.2 open weights | depends on where it runs | no data | text | 376º | ||
| Mistral-7B-v0.1 open weights | depends on where it runs | no data | text | no data |
3 models are open-weights only, with no API price (the cost depends on where they run), and are at the end of the list.1
About Mistral AI
| Organization | Mistral AI |
|---|---|
| Country | France |
| Headquarters | Paris |
| Founded | 28/04/2023 |
| Official website | mistral.ai |
| Wikidata item | Q119718658 |
Data from Wikidata.4
Other AI companies
More free calculators: how much it costs to put AI in your business, how much unanswered WhatsApp costs and how much it costs to hire a customer service agent. For people who code: the technical AI blog.
How CertuAI can help
You don't need to choose a model, count tokens or set up a server. CertuAI builds an AI agent that answers your customers on WhatsApp through Meta's official API, with what your business knows how to answer. The Start plan costs US$ 75 per month and already comes with 1,600 responses.
Sources and method
- Price source: Mistral AI - API pricing (official page), read on Sep 25, 2026. How the page was read: API pricing page. robots.txt allows it; the terms only open with JavaScript and were not read, so the catalog does not download the page by itself. Reais converted at the selling PTAX rate of the Central Bank of Brazil on Oct 9, 2026: R$ 4.9892 per dollar.
- The conversation math: 10 agent replies, each reading 8,000 input tokens (instructions, what the company knows and the conversation history) and writing 300 output tokens. This is the basis CertuAI uses to estimate the cost per reply. It does not include cache discounts or the extra tokens of models that “think” before answering, so a reasoning model can come out more expensive. In a CertuAI measurement from Aug 5, 2026, with two real businesses on Gemini, the cost came to between R$ 72 and R$ 77 per 10 thousand messages, below this estimate.
- Source: LMArena, text leaderboard, public dataset on Hugging Face (CC BY 4.0 license), published Oct 8, 2026, queried Oct 9, 2026. What the number measures: Score from the LMArena text leaderboard, in the style-control version and the overall category: people send the same question to two models without knowing which they are and vote for the better answer, and LMArena turns the votes into a score. The higher it is, the more often the model won. The confidence band is the interval LMArena itself publishes for the score. The rank is the one on the full leaderboard, which has models outside this catalog. How the name was matched: Same company and same name, ignoring periods, spaces and hyphens. It also accepts the name with the reasoning level at the end (high, medium, low, minimal) and the name with a date at the end when LMArena only knows that model by a date.
- Source: Wikidata (CC0 license), queried Oct 9, 2026. What the number measures: Country (P17), founding date (P571), headquarters (P159) and official website (P856) of the company's item on Wikidata. How the name was matched: Item picked by hand and checked against the official site: the item's site must be on the company's domain.
LMArena in the table: the model's best rank on the Oct 8, 2026 text leaderboard (public LMArena dataset, CC BY 4.0 license); the cell is empty when the model is not on the leaderboard or the name did not match with certainty. Context: the context window reported in the company's official documentation.
In short
The 10 Mistral AI models, with the official page price in dollars and reais, the cost per WhatsApp conversation and test scores.
About CertuAI: CertuAI is the AI that answers a small business's WhatsApp, Instagram and Messenger 24/7, with a built-in CRM, and is a Tech Provider on Meta's WhatsApp Business Platform. Paid plans start at US$ 75 a month, with no lock-in. Create my agent