GPT-5.6 Sol vs GPT-5.6 Terra
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
GPT-5.6 Terra is 50% cheaper on blended cost ($8.75 vs $17.50/Mtok)
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Oby OpenAI
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Oby OpenAI
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|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | Jul 9, 2026 | Jul 9, 2026 |
| Pricing per million tokens | ||
| Input | $5.00/Mtok | $2.50/Mtok |
| Output | $30.00/Mtok | $15.00/Mtok |
| Blended avg | $17.50/Mtok | $8.75/Mtok |
| Cached input | $0.500/Mtok | $0.250/Mtok |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
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textimage
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| Providers | ||
| Available from |
OpenAI — $5.00/$30.00/Mtok
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OpenAI — $2.50/$15.00/Mtok
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Cost at scale — 1M tokens (50/50 input/output)
| Volume | GPT-5.6 Sol | GPT-5.6 Terra | Savings |
|---|---|---|---|
| 1M tokens | $17.5 | $8.75 | $8.75 (50%) |
| 10M tokens | $175 | $87.5 | $87.5 (50%) |
| 100M tokens | $1750 | $875 | $875 (50%) |
| 1000M tokens | $17500 | $8750 | $8750 (50%) |
Try GPT-5.6 Terra on OpenAI
The cheaper option here — GPT-5.6 Terra costs $8.75/Mtok blended on OpenAI.
Summary
GPT-5.6 Sol by OpenAI costs $5.00/Mtok input and $30.00/Mtok output, with a 1M-token context window. It supports text, image input.
GPT-5.6 Terra by OpenAI costs $2.50/Mtok input and $15.00/Mtok output, with a 1M-token context window. It supports text, image input.
On a blended cost basis, GPT-5.6 Terra is 50% cheaper than GPT-5.6 Sol.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.