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Claude Fable 5 vs GPT-5.6 Sol

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 Fable 5 GPT-5.6 Sol
Input cost / 1M $10.00 $4.00
Output cost / 1M $50.00 $20.00
Context window 1,000,000 tokens 1,050,000 tokens
MMLU score

Cost verdict

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

Claude Fable 5

Input: 1M × $10.00 = $10.00
Output: 1M × $50.00 = $50.00
Total
$60.00

GPT-5.6 Sol

Input: 1M × $4.00 = $4.00
Output: 1M × $20.00 = $20.00
Total
$24.00

Total cost savings

$36.00

GPT-5.6 Sol saves $36.00 per month vs the other model at this volume.

Model routing savings

Uses this page's verified rates. Claude Fable 5 is the premium route (higher combined per-1M cost); GPT-5.6 Sol handles routine traffic.

Premium model

Claude Fable 5

$10.00 in · $50.00 out / 1M

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Economical model

GPT-5.6 Sol

$4.00 in · $20.00 out / 1M

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All premium

Claude Fable 5

$3,000.00

100% of input and output on the premium route

Routed stack

80%GPT-5.6 Sol

Claude Fable 5

$1,560.00

Routine slice
$960.00
Premium slice
$600.00

Monthly savings

$1,440.00

48% lower

Rates pulled from this page's model database entries (claude-fable-5, gpt-5-6-sol) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.

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