GPT-5.6 Terra (Max) and MiMo-V2.6-Pro are close rivals from OpenAI and Xiaomi. Price separates them more than anything else; on a blended basis GPT-5.6 Terra Max costs 8.3 times as much as MiMo-V2.6-Pro. All numbers are the catalogue's recorded values; nobody ran either model by hand for this page.
Token pricing and a sample bill
Per million tokens, GPT-5.6 Terra Max charges $2.00 for input and $12.00 for output, while MiMo-V2.6-Pro charges $0.435 and $0.87. For output tokens, GPT-5.6 Terra Max is 14 times the price of MiMo-V2.6-Pro.
A reference job of 1 million input tokens and 200,000 output tokens costs $4.40 with GPT-5.6 Terra Max and $0.61 with MiMo-V2.6-Pro, so MiMo-V2.6-Pro saves $3.79. Scale it up to a support assistant answering 10,000 conversations of 2,000 input and 500 output tokens each and the bill is $100 for GPT-5.6 Terra Max against $13.05 for MiMo-V2.6-Pro. Blended at three input tokens per output token, the effective rates are $4.50 for GPT-5.6 Terra Max and $0.544 for MiMo-V2.6-Pro.
Overall capability: 2.4 points apart
The catalogue puts GPT-5.6 Terra Max at 32.3 and MiMo-V2.6-Pro at 29.9 on its intelligence index. It is a small margin for an index that averages many evaluations.
For context, that places GPT-5.6 Terra Max 46th and MiMo-V2.6-Pro 55th out of 109 scored models still on offer.
Neither model has a separate coding or math index recorded yet, so those narrower comparisons will have to wait for more data.
Generation gap
GPT-5.6 Terra Max came first, on July 9, 2026; MiMo-V2.6-Pro followed on September 21, 2026.
Cost per point of intelligence
Per point of intelligence index, GPT-5.6 Terra Max costs $0.14 of blended price per million tokens and MiMo-V2.6-Pro $0.018. MiMo-V2.6-Pro delivers each index point for 87% less; whether GPT-5.6 Terra Max's extra 2.4 points are worth the premium depends on how often your tasks need them.
Throughput and time to first token
Once a response is under way, GPT-5.6 Terra Max produces roughly 116 tokens per second against 41 tokens per second for MiMo-V2.6-Pro. GPT-5.6 Terra Max is ahead by 182% on throughput. Before any text appears, GPT-5.6 Terra Max takes 3.4 minutes and MiMo-V2.6-Pro 3.0 seconds. GPT-5.6 Terra Max writes faster once it starts, but MiMo-V2.6-Pro's head start is large enough that MiMo-V2.6-Pro still finishes first at any typical reply length; GPT-5.6 Terra Max only catches up beyond about 13,000 tokens. A first-token wait of that length suits background work better than live conversation.
Add the two numbers up for a 600-token reply and MiMo-V2.6-Pro finishes first: 3.5 minutes for GPT-5.6 Terra Max, 18 seconds for MiMo-V2.6-Pro.

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