GPT-5.6 Terra · OpenAI
See the official pricing source for billing conditions.
Official pricing sourceLast verified:
All tiers and model details →OpenAI vs xAI. Compare quotes in a similar input-price band with different output pricing.
USD token-only estimates using each offering’s published default tier. 1M tokens are an aggregate workload, not a single request. Cache savings, batch discounts, long-context surcharges, tools, taxes and negotiated rates are excluded. Tokenizers and capabilities may differ; lower price does not establish equivalent quality.
xAI · Grok 4.5 is 42.9% cheaper for this workload. Absolute difference: $6.00.
| Metric | GPT-5.6 TerraOpenAI | Grok 4.5xAI |
|---|---|---|
| Input / 1M tokens | $2.00 | $2.00 |
| Output / 1M tokens | $12.00 | $6.00 |
| Cached input / 1M | $0.20 | $0.30 |
| Context window | 1,050,000 | 500,000 |
| Maximum output | 128,000 | Not published |
| 1M input + 1M output | $14.00 | $8.00 |
| Default pricing basis | standard | standard |
| Last verified (UTC) | 2026-09-04T18:24:25.246Z | 2026-09-04T18:24:25.178Z |
Each calculator uses the same default-tier assumption described above.
See the official pricing source for billing conditions.
Official pricing sourceLast verified:
All tiers and model details →xAI Grok 4.5
Official pricing sourceLast verified:
All tiers and model details →