YandexGPT 5.1 Pro
YandexGPT 5.1 Pro is an API-only (closed weights) language model from Yandex, released August 25, 2025.
The updated YandexGPT 5.1 Pro is the best Yandex model for word processing. On a stream that combines user questions and complex business tasks, it outperforms the previous model and reaches OpenAI's GPT-4.1 level.
Check it against your own PC →
Lab
Yandex
Released
August 25, 2025
Weights
API-only (closed weights)
Parameters
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Context
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Price / M tokens
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Epoch ECI
not yet rated
Benchmark results
Epoch AI has not published results for YandexGPT 5.1 Pro yet. New models are usually evaluated within days to weeks.