GPT-5.6 Sol vs Qwen3.8-Max

Both are Flagship-tier models, from OpenAI and Alibaba Qwen respectively. Qwen3.8-Max is the cheaper choice overall at a 4:1 input:output ratio.

Which is cheaper

Side by side

SpecGPT-5.6 SolQwen3.8-Max
ProviderOpenAIAlibaba Qwen
TierFlagshipFlagship
Context window1.05M1M
Max output128K—
Input $/1M$4.00$2.00
Output $/1M$20.00$6.00
Cache read $/1M$0.40—
Cache write $/1M$5.00—
Modalitiestext, imagetext

GPT-5.6 Sol. Short-context rate, for prompts up to 272K input tokens. Above 272K the rate is $8 input / $30 output, cache read $0.80, cache write $10 per 1M. Promotional pricing, stated to run at least through 21 November 2026.

Qwen3.8-Max. International (Singapore) USD pricing, flat rate 0<tokens<=1M.

Sources

GPT-5.6 Sol — verified August 29, 2026

Qwen3.8-Max — verified August 29, 2026

Full GPT-5.6 Sol pricing page → · Full Qwen3.8-Max pricing page →