GPT-5.6 Terra vs Grok 4.5: Pricing Comparison
Compare pricing, capabilities, and costs for your LLM workloads.
OpenAI
GPT-5.6 Terra
Pricing (per 1M tokens)
Input$2.00
Output$12.00
Cached Input$0.2000
Batch Input$1.00
Batch Output$6.00
Context & Output
Context Window1M tokens
Max Output128K tokens
Capabilities
Categorymid
Multimodaltext + image
Fine-tuningNo
StreamingYes
xAI
Grok 4.5
Pricing (per 1M tokens)
Input$2.00
Output$6.00
Cached Input$0.3000
Context & Output
Context Window500K tokens
Max Output32.8K tokens
Capabilities
Categoryflagship
Multimodaltext + image
Fine-tuningNo
StreamingYes
Quick Verdict
Cheaper Input Price
Grok 4.5
0.0% cheaper
Cheaper Output Price
Grok 4.5
50.0% cheaper
Larger Context Window
GPT-5.6 Terra
+500K tokens
Cost Comparison
Sample workload: 1,000,000 input tokens + 1,000,000 output tokens
GPT-5.6 Terra
$14.00
$2.00/1M input + $12.00/1M output
Grok 4.5
$8.00
$2.00/1M input + $6.00/1M output
Grok 4.5 is 42.9% cheaper for this workload.
Frequently Asked Questions
Which is cheaper, GPT-5.6 Terra or Grok 4.5?
For input tokens, Grok 4.5 is cheaper at $2.00 per 1M tokens. For output tokens, Grok 4.5 is cheaper at $6.00 per 1M tokens. The overall cost depends on your workload's input/output ratio.
What is the context window size of GPT-5.6 Terra vs Grok 4.5?
GPT-5.6 Terra has a context window of 1M tokens, while Grok 4.5 has 500K tokens. GPT-5.6 Terra supports a larger context window of 1M tokens, which is beneficial for processing longer documents.
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