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Gemini 3.6 Flash vs Grok 4.3 — Price, Context, and Capability Compared

Verdict

Gemini 3.6 Flash costs 2.2× more per blended million tokens than Grok 4.3. Gemini 3.6 Flash has the larger context window (1,000,000 tokens). Default to Grok 4.3 unless you specifically need Gemini 3.6 Flash's edge.

Spec comparison

Gemini 3.6 FlashGrok 4.3
Price (input)$1.50/M$1.25/M
Price (output)$9.00/M$2.50/M
Blended price$3.38/M$1.56/M
Context window1,000,000 tokens1,000,000 tokens
Max output64,000 tokens64,000 tokens
Modalitiestext, vision, audiotext, vision
Reasoning modeYesYes
Released2026-062026-06
Speed114 t/s98 t/s

Cost at scale (3:1 blended)

Tokens / monthGemini 3.6 FlashGrok 4.3Delta
1,000,000$3.38$1.56$1.81 (2.2×)
10,000,000$33.75$15.63$18.13 (2.2×)
100,000,000$337.50$156.25$181.25 (2.2×)

Choose Gemini 3.6 Flash if…

  • Faster than Gemini 3.5 Flash
  • Top-tier coding and agentic performance for its price
  • 1M-token context
  • Latency-sensitive coding and agentic tasks that still need a huge context window.

Choose Grok 4.3 if…

  • xAI’s general-purpose flagship
  • Extremely fast for its size
  • 1M-token context
  • General-purpose work where speed and a huge context window both matter.

Run this exact matchup right now

Send the same prompt to Gemini 3.6 Flash and Grok 4.3 side by side and see the outputs yourself.

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FAQ

Is Gemini 3.6 Flash cheaper than Grok 4.3?

Grok 4.3 is cheaper, at $1.56 per million blended tokens vs $3.38 for Gemini 3.6 Flash.

Which has the bigger context window, Gemini 3.6 Flash or Grok 4.3?

Both models support 1,000,000 tokens of context.

Can Gemini 3.6 Flash replace Grok 4.3 for coding?

Both are viable for coding. Faster than Gemini 3.5 Flash (Gemini 3.6 Flash) vs xAI’s general-purpose flagship (Grok 4.3) — pick based on which strength matters more for your workload.

Which is faster, Gemini 3.6 Flash or Grok 4.3?

Gemini 3.6 Flash is faster: 114 t/s vs 98 t/s, measured on our speed benchmarks.

Related

Gemini 3.6 Flash pricingGrok 4.3 pricingvs Claude Opus 4.8vs Gemini 2.5 Flashvs Gemini 3.1 Provs GPT-5.6 TerraPremium model tests

Pricing verified 2026-05-19. Specs verified 2026-08-08.