FLUX 3 Image & Nano Banana 2.1 on Inliner.ai | Model Routing Guide
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FLUX 3 Image & Nano Banana 2.1 on Inliner

Inliner's core generation and reference-editing engines have been upgraded in place to FLUX 3 Image (Black Forest Labs) and Nano Banana 2.1 (Google Gemini). Existing feature codes (IMAGE_GEN_FLUX_PRO and IMAGE_GEN_NANO_BANANA) and credit costs (4 image credits per standard generation) remain unchangedβ€”so every existing URL, script, and MCP agent gets higher fidelity automatically.

Default Generator Β· FLUX 3

FLUX 3 Image

IMAGE_GEN_FLUX_PRO Β· blackforestlabs/flux-3

Our default generation model for new non-reference images and custom aspect ratios. FLUX 3 Image delivers rich editorial lighting, natural textures, and broad aspect-ratio coverage.

  • 14 native aspect ratios (from 21:9 ultrawide to 9:16 vertical), automatically resized to your exact pixel dimensions (256px–1440px).
  • Reference-capable: Supports up to 10 reference images via blackforestlabs/flux-3/edit-image when explicitly selected.
  • Zero migration needed: All IMAGE_GEN_FLUX_PRO requests automatically route to FLUX 3 Image.
Reference & Edit Default Β· 2.1

Nano Banana 2.1

IMAGE_GEN_NANO_BANANA Β· gemini-nano-banana-2.1

Our default model whenever project or prompt reference images are attached, and the Recommended edit tier inside the Studio and Embeddable Editor.

  • Subject identity preservation: Keeps characters, products, and brand visual language consistent across multi-shot campaigns.
  • Conversational URL & Studio edits: Powers chained URL edits (/hero.png/make-it-sunset.png) and fast natural-language revisions.
  • Budget sibling available: Pair with Gemini Flash Lite (IMAGE_GEN_NANO_BANANA_LITE) in Cheap Mode for 1-credit reference-aware generations.

Complete Inliner Model Lineup & Routing Guide

Leave your request on Auto to let Inliner inspect your prompt, dimensions, and attached referencesβ€”or pass ?model=... (or mode=cheap) to steer explicitly:

Model Feature Code Credits Best For
FLUX 3 Image IMAGE_GEN_FLUX_PRO 4 credits Default photoreal & editorial generation, custom dimensions (256–1440px), up to 10 reference images.
Nano Banana 2.1 IMAGE_GEN_NANO_BANANA 4 credits Default when reference images are present; subject continuity & Recommended editor tier.
GPT Image 2.5 Flare IMAGE_GEN_GPT_IMAGE_2_5_FLARE 4 credits Fast new images with readable text, packaging mockups, UI layouts, and posters up to 2048Γ—2048.
GPT Image 2.5 Sunburst IMAGE_GEN_GPT_IMAGE_2_5_SUNBURST 4 credits Precision local edits ("change this, leave the rest") and native rectangular context masks in the editor.
Grok Imagine 2 IMAGE_GEN_GROK_IMAGINE_2 4 credits Strong human realism, prompt adherence, and up to 3 reference images via OpenRouter.
Recraft V4.1 Utility / Pro IMAGE_GEN_RECRAFT_V4_1_UTILITY 4 credits Logos, icons, brand graphics, product mockups, and clean design systems (plus RECRAFT_V3_SVG for true SVG).
Krea 2 Medium IMAGE_GEN_KREA_2_MEDIUM 4 credits Artistic style transfer, painterly aesthetics, and moodboard exploration with style references.
Z-Image Turbo (Cheap Mode) IMAGE_GEN_Z_IMAGE_TURBO 1 credit Default mode=cheap generator for fast, ultra-low-cost general imagery.
Qwen Image (Cheap Mode) IMAGE_GEN_QWEN_IMAGE 1 credit Auto-selected in mode=cheap when prompts involve text, posters, or design layouts.
Gemini Flash Lite (Cheap Mode) IMAGE_GEN_NANO_BANANA_LITE 1 credit Auto-selected in mode=cheap when reference images are attached, and the 1-credit editor tier.

Code Examples: URL, CLI & REST API

HTML, CLI & API

<!-- 1. Explicit FLUX 3 Image via URL parameter -->
<img src="https://img.inliner.ai/acme/editorial-mountain-dawn_1200x600.png?model=IMAGE_GEN_FLUX_PRO" alt="Mountain dawn" />

<!-- 2. Request lossless WebP delivery of any existing PNG/JPG asset (0 credits) -->
<img src="https://img.inliner.ai/acme/editorial-mountain-dawn_1200x600.png.webp" alt="Mountain dawn WebP" />

# 3. Generate with Nano Banana 2.1 from the CLI
npx @inliner/cli "founder-portrait-warm-studio-light_1024x1024.png" -p acme --model IMAGE_GEN_NANO_BANANA

# 4. Use Cheap Mode (1 credit) for high-volume drafts
curl -X POST https://api.inliner.ai/content/generate \
  -H "Authorization: Bearer $INLINER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"project":"acme","prompt":"blog-card-illustration_800x450.png","mode":"cheap"}'
Explore more: GPT Image 2.5 Flare & Sunburst Guide Β· Embeddable Image Editor Β· Latest Model Release Notes