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VoyageAI by MongoDB: voyage-4-large vs VoyageAI by MongoDB: voyage-multimodal-3.5

A side-by-side comparison of VoyageAI by MongoDB: voyage-4-large ($0.42 / 1M tokens) and VoyageAI by MongoDB: voyage-multimodal-3.5 ($0.42 / 1M tokens) using current USD prices and capabilities from the api14 catalog. Both run through the same OpenAI-compatible API.

Specifications

VoyageAI by MongoDB: voyage-4-largeVoyageAI by MongoDB: voyage-multimodal-3.5
ProviderVoyage AIVoyage AI
Input$0.42 / 1M tokens$0.42 / 1M tokens
Context window32,00032,000
Max output28,80028,800
Inputtexttext, image
Outputembeddingsembeddings
Tool calling
Structured output
Reasoning control
AddedJul 27, 2026Jul 27, 2026

Key differences

  • Both have about the same input price.

Switch with one string

Both models use the same endpoint and request shape. Change the model value from "voyageai/voyage-4-large" to "voyageai/voyage-multimodal-3.5" and prompts, streaming and tools keep working.

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api14.com/api/v1",
  apiKey: process.env.API14_API_KEY,
});

const result = await client.embeddings.create({
  "model": "voyageai/voyage-multimodal-3.5",
  "input": [
    "The quick brown fox",
    "Lorem ipsum"
  ]
});
console.log(result.data.map((d) => d.embedding.length));

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