If you only looked at the intelligence index, GPT-5.6 Terra (Max) and Qwen3.8 Max (0902) would be hard to tell apart. No hands-on testing went into this write-up; it summarises the recorded benchmark, price and speed data for both models. What separates them most is responsiveness; GPT-5.6 Terra Max takes 3.4 minutes to produce its first token, Qwen3.8 Max 0902 3.2 seconds.
GPT-5.6 Terra Max is the faster writer
Measured output speed is 116 tokens per second for GPT-5.6 Terra Max and 38 tokens per second for Qwen3.8 Max 0902. That makes GPT-5.6 Terra Max roughly 3 times as fast at writing. Before any text appears, GPT-5.6 Terra Max takes 3.4 minutes and Qwen3.8 Max 0902 3.2 seconds. The faster writer, GPT-5.6 Terra Max, gives away too much at the start to win on time: counting the first-token wait, Qwen3.8 Max 0902 finishes first for any reply shorter than about 11,000 tokens. A first-token wait of that length suits background work better than live conversation.
For a 600-token response, first token plus generation comes to roughly 3.5 minutes on GPT-5.6 Terra Max and 19 seconds on Qwen3.8 Max 0902.
Running costs
The list prices are $2.00 in and $12.00 out for GPT-5.6 Terra Max, and $2.00 in and $6.00 out for Qwen3.8 Max 0902, per million tokens. GPT-5.6 Terra Max costs twice as much per output token.
A reference job of 1 million input tokens and 200,000 output tokens costs $4.40 with GPT-5.6 Terra Max and $3.20 with Qwen3.8 Max 0902, so Qwen3.8 Max 0902 saves $1.20. 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 $70.00 for Qwen3.8 Max 0902.
Reasoning and overall scores
Qwen3.8 Max 0902 comes out ahead on the intelligence index, 33.7 to 32.3. The lead is visible but narrow, so it should not decide the choice on its own. In relative terms, Qwen3.8 Max 0902 scores 4% higher.
Among 109 active scored models, GPT-5.6 Terra Max sits 46th and Qwen3.8 Max 0902 44th.
There are no coding or math index scores for either model in the catalogue, which keeps this comparison at the aggregate level.
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 Qwen3.8 Max 0902 $0.089. With the higher score and the lower cost per point, Qwen3.8 Max 0902 is the better value per point on these numbers.
Generation gap
The release dates are July 9, 2026 for GPT-5.6 Terra Max and September 2, 2026 for Qwen3.8 Max 0902, about 2 months apart.

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