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Compare Black Forest Labs FLUX.2 [klein] 4B with other AI models

See how FLUX.2 [klein] 4B from Black Forest Labs compares with other AI models on price, context length and features.

Chat with FLUX.2 [klein] 4B
1 model
FLUX.2 [klein] 4BBlack Forest Labs

Fastest, cheapest FLUX.2 model for real-time and high-volume text-to-image and multi-reference editing.

Overview

Overview for FLUX.2 [klein] 4B
MetricFLUX.2 [klein] 4B
AuthorBlack Forest Labs
TypeImage generation
Context length—
Input modalitiesTextImage
Output modalitiesImage
ReleasedJan 15, 2026
Served byBlack Forest Labs via Oxyy
APIOpenAI-compatible/v1/images/generations
  • Requests are sent to a healthy provider automatically; if one errors, the gateway retries against another serving the same model.

Pricing

Pricing for FLUX.2 [klein] 4B
MetricFLUX.2 [klein] 4B
Per megapixel$0.0056 /MPStandard $0.014
  • Includes the Launch Promo discount (60% off the standard price).

Features

Features for FLUX.2 [klein] 4B
MetricFLUX.2 [klein] 4B
Image inputYes

Activity

Activity for FLUX.2 [klein] 4B
MetricFLUX.2 [klein] 4B
Tokens (30 days)353.7K tokens · last 30 days
Input tokens12.7K
Output tokens (excluding reasoning)341.0K
Reasoning tokens0
FLUX.2 [klein] 4B353.7K tokens · last 30 days
  • Input 12.7K
  • Output (excl. reasoning) 341.0K
  • Reasoning 0

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How this comparison is built

Prices are what Oxyy charges today; where a discount applies, the standard price is shown beside it. Context window, output limit, modalities and features come from the Oxyy model catalog. Latency, time to first token and throughput are medians measured on Oxyy traffic over the last 7 days (throughput from streaming requests only); a model with too little traffic shows a dash. Benchmark scores appear only with their source and date. Oxyy is an independent API gateway, not affiliated with the model vendors named on this page.