Grok 3 vs FLUX 1.1 Pro Ultra

Compare Grok 3 and FLUX 1.1 Pro Ultra: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

Updated 2026-05-21 · By Abhishek Raj · Our methodology

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Feature Grok 3 FLUX 1.1 Pro Ultra
CategoryFrontierImage
Parameters~800B~30B
Context Window128KN/A
Input Price$0.10/1M tokens$0.06/image/1M tokens
Output Price$0.25/1M tokensN/A/1M tokens
Latency~500ms~6s

Choose Grok 3 when:

  • ✓ Transit predictions
  • ✓ Creative interpretations
  • ✓ Research
Key Strengths:

Strong reasoning, Real-time knowledge, Creative output

Choose FLUX 1.1 Pro Ultra when:

  • ✓ Print-quality imagery
  • ✓ Ultra-HD content
  • ✓ Professional art
Key Strengths:

Ultra quality, 4K output, Best detail

Verdict: Grok 3 vs FLUX 1.1 Pro Ultra

For cost efficiency, FLUX 1.1 Pro Ultra wins at $0.06/image/1M input tokens. For speed, Grok 3 is faster at ~500ms. Grok 3 excels at Transit predictions while FLUX 1.1 Pro Ultra is better for Print-quality imagery. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.

Detailed Analysis

Pricing Comparison

Grok 3 costs $0.10/1M input tokens and $0.25/1M output tokens. FLUX 1.1 Pro Ultra costs $0.06/image input and N/A output. FLUX 1.1 Pro Ultra is 1.7x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

Grok 3 has a 128K context window with ~500ms latency. FLUX 1.1 Pro Ultra offers N/A context at ~6s. Grok 3 has the larger context window.

Best For

Grok 3 (Frontier) is optimized for: Transit predictions, Creative interpretations, Research. FLUX 1.1 Pro Ultra (Image) works best for: Print-quality imagery, Ultra-HD content, Professional art.

Try Both on XALEN

Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:

from xalen import XALEN

client = XALEN(api_key="xln_test_YOUR_KEY")

# Use Grok 3
response_a = client.chat.completions.create(
    model="grok-3",
    messages=[{"role": "user", "content": "Your question here"}]
)

# Use FLUX 1.1 Pro Ultra
response_b = client.chat.completions.create(
    model="flux-1-1-pro-ultra",
    messages=[{"role": "user", "content": "Your question here"}]
)

Start Building with XALEN

200+ AI models. One API. Pay-as-you-go.

Get API Key Try in Playground

Frequently Asked Questions

Which is better, Grok 3 or FLUX 1.1 Pro Ultra?

Grok 3 (Frontier, ~800B) offers Strong reasoning. FLUX 1.1 Pro Ultra (Image, ~30B) offers Ultra quality. Choose Grok 3 for Transit predictions or FLUX 1.1 Pro Ultra for Print-quality imagery.

How much does Grok 3 cost vs FLUX 1.1 Pro Ultra?

Grok 3: $0.10/1M input, $0.25/1M output. FLUX 1.1 Pro Ultra: $0.06/image/1M input, N/A/1M output. Both available on XALEN with batch processing at 50% discount.

Can I use both models on XALEN?

Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between Grok 3 and FLUX 1.1 Pro Ultra by changing the model parameter. No code changes needed.

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Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.