GPT-5.6 Terra · OpenAI
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GPT-5.6 Terra vs Grok 4.5
OpenAI vs xAI. Compare quotes in a similar input-price band with different output pricing.
STALEThis historical quote is outside the configured verification window. Check the official source before use. Last successfully verified 2026-09-09 UTC.
VerifiedRecently verified against the official source. Last successfully verified 2026-10-23 UTC.
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.
Current cost comparison is paused because one or both quotes are not verified. The rates below are historical references, not current offers.
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| 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 | Paused | Paused |
| Default pricing basis | standard | standard |
| Last verified (UTC) | 2026-09-09T01:36:54.046Z | 2026-10-23T00:19:55.845Z |
Official sources and pricing scope
Grok 4.5 · xAI
xAI Grok 4.5
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