We use cookies. Cookies and browser storage keep you signed in and remember your preferences. With your permission we also measure how the site is used. You can any time. See our cookie policy.

Black Forest Labs: FLUX 3 Image Klein vs Google: Nano Banana 2.1

A side-by-side comparison of Black Forest Labs: FLUX 3 Image Klein ($0.03 / image) and Google: Nano Banana 2.1 ($5.25 / 1M tokens) using current USD prices and capabilities from the api14 catalog. Both run through the same OpenAI-compatible API.

Specifications

Black Forest Labs: FLUX 3 Image KleinGoogle: Nano Banana 2.1
ProviderBlack Forest LabsGoogle
Image output$0.03 / image$105.00 / 1M tokens
Input-$5.25 / 1M tokens
Output-$26.25 / 1M tokens
Web search-$49.00 / 1K searches
Context window46,86465,536
Max output42,17758,982
Inputtext, imageimage, text
Outputimageimage, text
Tool calling
Structured output
Reasoning control
AddedOct 15, 2026Oct 6, 2026

Key differences

  • Google: Nano Banana 2.1 reads 1.4× more context (65,536 tokens).
  • Only Google: Nano Banana 2.1 supports tool calling.
  • Only Google: Nano Banana 2.1 supports structured JSON output.
  • Only Google: Nano Banana 2.1 supports reasoning effort control.

Switch with one string

Both models use the same endpoint and request shape. Change the model value from "black-forest-labs/flux-3-image-klein" to "google/gemini-nano-banana-2.1" 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.images.generate({
  "model": "google/gemini-nano-banana-2.1",
  "prompt": "A minimalist product photo of a ceramic mug on a wooden table",
  "n": 1,
  "aspect_ratio": "1:1"
});
import { writeFile } from "node:fs/promises";
await writeFile("image.png", Buffer.from(result.data[0].b64_json, "base64"));

More comparisons