Directory · Model comparison
Claude Sonnet 5 vs GPT-5.6 Terra
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 Sonnet 5 | GPT-5.6 Terra |
|---|---|---|
| Input cost / 1M | $2.00 | $2.50 |
| Output cost / 1M | $10.00 | $15.00 |
| 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 Sonnet 5
- Input: 1M × $2.00 = $2.00
- Output: 1M × $10.00 = $10.00
- Total
- $12.00
GPT-5.6 Terra
- Input: 1M × $2.50 = $2.50
- Output: 1M × $15.00 = $15.00
- Total
- $17.50
Total cost savings
$5.50
Claude Sonnet 5 saves $5.50 per month vs the other model at this volume.
Model routing savings
Uses this page's verified rates. GPT-5.6 Terra is the premium route (higher combined per-1M cost); Claude Sonnet 5 handles routine traffic.
All premium
GPT-5.6 Terra
$875.00
100% of input and output on the premium route
Routed stack
80% → Claude Sonnet 5
20% → GPT-5.6 Terra
$655.00
- Routine slice
- $480.00
- Premium slice
- $175.00
Monthly savings
$220.00
25.1% lower
Rates pulled from this page's model database entries (gpt-5-6-terra, claude-sonnet-5) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.
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