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Claude Haiku 4.5 vs Grok 4.3

Side-by-side API economics and benchmarks. Per-1M input and output rates, context window, and verified metrics.

Tale of the tape

Head-to-head specs pulled from each model profile.

Metric Claude Haiku 4.5 Grok 4.3
Input cost / 1M $1.00 $1.25
Output cost / 1M $5.00 $2.50
Context window 200,000 tokens 1,000,000 tokens
MMLU score

Cost verdict

Enter monthly input and output volumes to see total cost savings.

Claude Haiku 4.5

Input: 1M × $1.00 = $1.00
Output: 1M × $5.00 = $5.00
Total
$6.00

Grok 4.3

Input: 1M × $1.25 = $1.25
Output: 1M × $2.50 = $2.50
Total
$3.75

Total cost savings

$2.25

Grok 4.3 saves $2.25 per month vs the other model at this volume.

Model routing savings

Uses this page's verified rates. Claude Haiku 4.5 is the premium route (higher combined per-1M cost); Grok 4.3 handles routine traffic.

Premium model

Claude Haiku 4.5

$1.00 in · $5.00 out / 1M

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Economical model

Grok 4.3

$1.25 in · $2.50 out / 1M

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All premium

Claude Haiku 4.5

$300.00

100% of input and output on the premium route

Routed stack

80%Grok 4.3

Claude Haiku 4.5

$210.00

Routine slice
$150.00
Premium slice
$60.00

Monthly savings

$90.00

30% lower

Rates pulled from this page's model database entries (claude-haiku-4-5, grok-4-3) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.

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