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Nano Banana 2 Lite vs Flux Dev: Which AI Model Should You Choose?

Pricing, context windows, latency, capabilities, and a one-line code switch — everything you need to pick the right model.

Replicate
Image Generation
vs
Replicate
Image Generation
Verdict

Nano Banana 2 Lite and Flux Dev are closely matched on pricing and context. The right choice depends on your specific workload — see the table below for the full breakdown.

Side-by-side specs

SpecNano Banana 2 LiteFlux Dev
ProviderReplicateReplicate
CategoryImage GenerationImage Generation
Input cost / 1M tokensn/an/a
Output cost / 1M tokensn/an/a
Context window——
Max output tokens——
Avg. latency—10.0s
Featured—Yes
NewYes—
Capabilities
text
webp
jpg
png

Pricing example

A typical chat workload of 100,000 input tokens plus 50,000 output tokens.

Nano Banana 2 Lite
n/a

100K in × n/a + 50K out × n/a

Flux Dev
n/a

100K in × n/a + 50K out × n/a

Switch in one line

Both models live behind Railwail's OpenAI-compatible endpoint. Replace the model string and you are done.

JavaScript / TypeScript
import OpenAI from "openai";

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

// Before — using Nano Banana 2 Lite
let r = await client.chat.completions.create({
  model: "google/nano-banana-2-lite",
  messages: [{ role: "user", content: "Hello" }],
});

// After — switched to Flux Dev
r = await client.chat.completions.create({
  model: "black-forest-labs/flux-dev-lora",
  messages: [{ role: "user", content: "Hello" }],
});
Python
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["RAILWAIL_API_KEY"],
    base_url="https://railwail.com/v1",
)

# Before — using Nano Banana 2 Lite
r = client.chat.completions.create(
    model="google/nano-banana-2-lite",
    messages=[{"role": "user", "content": "Hello"}],
)

# After — switched to Flux Dev
r = client.chat.completions.create(
    model="black-forest-labs/flux-dev-lora",
    messages=[{"role": "user", "content": "Hello"}],
)
cURL
# Before — using Nano Banana 2 Lite
curl https://railwail.com/v1/chat/completions \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/nano-banana-2-lite",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

# After — switched to Flux Dev
curl https://railwail.com/v1/chat/completions \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "black-forest-labs/flux-dev-lora",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Which one wins for...

Quick verdicts derived from public specs. Always validate on your own workload.

Coding
Nano Banana 2 Lite

Higher coding category match or larger context wins.

Writing
Nano Banana 2 Lite

Bigger context window helps maintain long-form coherence.

Long documents
Nano Banana 2 Lite

The larger context window is the deciding factor.

Vision
Tie

Multimodal/vision support is required for image inputs.

Real-time chat
Flux Dev

Lower average latency wins for interactive UX.

Cost-sensitive
Tie

The model with the lower input-token price wins.

Frequently asked questions

Which is cheaper, Nano Banana 2 Lite or Flux Dev?
Nano Banana 2 Lite and Flux Dev cannot be compared on per-token price: at least one of them has no per-token price listed (it is priced per run or not yet priced). See each model page for its current price.
Which has more context, Nano Banana 2 Lite or Flux Dev?
Nano Banana 2 Lite and Flux Dev have similar context windows (— vs —).
Is Nano Banana 2 Lite better than Flux Dev for coding?
For coding-heavy workloads we lean toward Nano Banana 2 Lite on this comparison — it scores higher on the relevant heuristics (category, tags, or context window). Both models are usable for code via Railwail's OpenAI-compatible endpoint, so the safest path is to A/B test on your own prompts.
Can I use both Nano Banana 2 Lite and Flux Dev via Railwail?
Yes. Both Nano Banana 2 Lite and Flux Dev are accessible through a single Railwail API key and the OpenAI-compatible /v1/chat/completions endpoint. You only change the "model" parameter to switch between them — no SDK swap, no separate billing.
How do I switch from Nano Banana 2 Lite to Flux Dev?
Replace the model identifier "google/nano-banana-2-lite" with "black-forest-labs/flux-dev-lora" in your request payload. Everything else — API key, base URL, request shape — stays the same. See the code example on this page for the exact one-line change.

Try Nano Banana 2 Lite and Flux Dev side by side

One API key, one endpoint, both models. Start free — no credit card required.

Get Started FreeView Nano Banana 2 LiteView Flux Dev