GLM-5.3 (Max) and Inkling 2 Small are close rivals from Z AI and Thinking Machines. No hands-on testing went into this write-up; it summarises the recorded benchmark, price and speed data for both models. The clearest gap is on the bill: GLM-5.3 Max is 4.5 times the blended price of Inkling 2 Small.
Cost: Inkling 2 Small is cheaper
Per million tokens, GLM-5.3 Max charges $1.40 for input and $4.40 for output, while Inkling 2 Small charges $0.30 and $1.00. GLM-5.3 Max costs 4.4 times as much per output token.
Take 1 million input tokens and 200,000 output tokens: that comes to $2.28 on GLM-5.3 Max and $0.50 on Inkling 2 Small. Scale it up to a month of coding-assistant traffic at 30 million input and 3 million output tokens and the bill is $55.20 for GLM-5.3 Max against $12.00 for Inkling 2 Small.
Benchmark scores
On the intelligence index, GLM-5.3 Max scores 31.7 against 30.6 for Inkling 2 Small. It is a small margin for an index that averages many evaluations.
Across the 109 active models with an intelligence score in the catalogue, GLM-5.3 Max ranks 47th and Inkling 2 Small ranks 52nd.
For coding or maths work specifically, the catalogue has no dedicated index on either side yet.
Speed and latency
GLM-5.3 Max generates about 74 tokens per second and Inkling 2 Small about 139 tokens per second. Inkling 2 Small is ahead by 88% on throughput. Time to first token is 1.7 seconds for GLM-5.3 Max and 2.2 seconds for Inkling 2 Small. So the two pull in opposite directions, with GLM-5.3 Max quicker off the mark and Inkling 2 Small quicker once it gets going; the crossover is around 100 tokens.
Add the two numbers up for a 2,000-token reply and Inkling 2 Small finishes first: 29 seconds for GLM-5.3 Max, 17 seconds for Inkling 2 Small.
Value for money
Per point of intelligence index, GLM-5.3 Max costs $0.068 of blended price per million tokens and Inkling 2 Small $0.016. Inkling 2 Small delivers each index point for 77% less; whether GLM-5.3 Max's extra 1.1 points are worth the premium depends on how often your tasks need them.
Release timing
Inkling 2 Small arrived on November 5, 2026, about 3 months after GLM-5.3 Max (August 18, 2026).

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