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Claude Haiku 4.5 vs Grok 4.3 — Price, Context, and Capability Compared

Verdict

Claude Haiku 4.5 costs 1.3× more per blended million tokens than Grok 4.3. Grok 4.3 has the larger context window (1,000,000 tokens). Default to Grok 4.3 unless you specifically need Claude Haiku 4.5's edge. Only Grok 4.3 exposes an extended-thinking mode.

Spec comparison

Claude Haiku 4.5Grok 4.3
Price (input)$1.00/M$1.25/M
Price (output)$5.00/M$2.50/M
Blended price$2.00/M$1.56/M
Context window200,000 tokens1,000,000 tokens
Max output32,000 tokens64,000 tokens
Modalitiestext, visiontext, vision
Reasoning modeNoYes
Released2025-112026-06
Speed148 t/s98 t/s

Cost at scale (3:1 blended)

Tokens / monthClaude Haiku 4.5Grok 4.3Delta
1,000,000$2.00$1.56$0.44 (1.3×)
10,000,000$20.00$15.63$4.38 (1.3×)
100,000,000$200.00$156.25$43.75 (1.3×)

Choose Claude Haiku 4.5 if…

  • Fastest Claude model
  • Lowest Claude pricing
  • Vision input included
  • Lightweight, high-volume operations like chat, tagging, and moderation.

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 Claude Haiku 4.5 and Grok 4.3 side by side and see the outputs yourself.

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FAQ

Is Claude Haiku 4.5 cheaper than Grok 4.3?

Grok 4.3 is cheaper, at $1.56 per million blended tokens vs $2.00 for Claude Haiku 4.5.

Which has the bigger context window, Claude Haiku 4.5 or Grok 4.3?

Grok 4.3 has the larger context window: 1,000,000 tokens vs 200,000.

Can Claude Haiku 4.5 replace Grok 4.3 for coding?

Both are viable for coding. Fastest Claude model (Claude Haiku 4.5) vs xAI’s general-purpose flagship (Grok 4.3) — pick based on which strength matters more for your workload.

Which is faster, Claude Haiku 4.5 or Grok 4.3?

Claude Haiku 4.5 is faster: 148 t/s vs 98 t/s, measured on our speed benchmarks.

Related

Claude Haiku 4.5 pricingGrok 4.3 pricingvs Gemini 3.1 Provs GPT-5.6 Terravs Grok-4.20 Reasoningvs Gemini 3.6 FlashPremium model tests

Pricing verified 2026-04-06. Specs verified 2026-08-08.