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Claude Haiku 4.5 vs Gemini 3.5 Flash

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 Gemini 3.5 Flash
Input cost / 1M $1.00 $1.50
Output cost / 1M $5.00 $9.00
Context window 200,000 tokens 1,048,576 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

Gemini 3.5 Flash

Input: 1M × $1.50 = $1.50
Output: 1M × $9.00 = $9.00
Total
$10.50

Total cost savings

$4.50

Claude Haiku 4.5 saves $4.50 per month vs the other model at this volume.

Model routing savings

Uses this page's verified rates. Gemini 3.5 Flash is the premium route (higher combined per-1M cost); Claude Haiku 4.5 handles routine traffic.

Premium model

Gemini 3.5 Flash

$1.50 in · $9.00 out / 1M

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Economical model

Claude Haiku 4.5

$1.00 in · $5.00 out / 1M

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All premium

Gemini 3.5 Flash

$525.00

100% of input and output on the premium route

Routed stack

80%Claude Haiku 4.5

Gemini 3.5 Flash

$345.00

Routine slice
$240.00
Premium slice
$105.00

Monthly savings

$180.00

34.3% lower

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

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