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  1. Home
  2. /
  3. Compare

FLUX.2 Max vs Step 3.5 Flash

Compare FLUX.2 Max from black-forest-labs and Step 3.5 Flash from stepfun on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Favicon for black-forest-labs
FLUX.2 Max
Favicon for stepfun
Step 3.5 Flash
Favicon for black-forest-labs
FLUX.2 Max
Favicon for stepfun
Step 3.5 Flash

Overview

FLUX.2 Max
Author
black-forest-labs
Step 3.5 Flash
Author
stepfun
FLUX.2 Max
Context length
—
Step 3.5 Flash
Context length
262Ktokens
FLUX.2 Max
Reasoning
Step 3.5 Flash
Reasoning
FLUX.2 Max
Input modalities
Step 3.5 Flash
Input modalities
FLUX.2 Max
Output modalities
Step 3.5 Flash
Output modalities

FLUX.2 Max vs Step 3.5 Flash: side-by-side summary

FLUX.2 Max and Step 3.5 Flash are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

FLUX.2 Max, from black-forest-labs, is priced at $0.07/megapixel on OpenRouter.

Step 3.5 Flash, from stepfun, has a 262,144-token context window and is priced at $0.10/M tokens input, $0.30/M tokens output on OpenRouter.

Context window
  • FLUX.2 Max: Not applicable
  • Step 3.5 Flash: 262,144 tokens
Price
  • FLUX.2 Max: $0.07/megapixel
  • Step 3.5 Flash: $0.10/M tokens input, $0.30/M tokens output
Provided by
  • FLUX.2 Max: black-forest-labs
  • Step 3.5 Flash: stepfun
  • FLUX.2 Max model details, providers and pricing
  • Step 3.5 Flash model details, providers and pricing

FLUX.2 Max vs Step 3.5 Flash at a glance

FLUX.2 Max vs Step 3.5 Flash comparison
AttributeFLUX.2 MaxStep 3.5 Flash
Input priceNot applicable$0.10/M tokens
Output priceNot applicable$0.30/M tokens
Context windowNot applicable262,144 tokens
Intelligence IndexNot available17.0
Coding IndexNot availableNot available
Agentic IndexNot availableNot available
Latency (p50)Not available1.18 s
Throughput (p50)Not available66.0 tok/s

Benchmark data updated Oct 5, 2026