Hunyuan A13B Instruct: pricing, context and benchmarks

What you need to know about Hunyuan A13B Instruct

Tencent, based in China, put Hunyuan A13B Instruct online on July 8, 2025. It accepts text as input and produces text. Its context window reaches 131,072 tokens, larger than 29 % of the models in the registry, and it can write up to 117,964 tokens in one go.

It has been available for about 16 months, long enough for its prices and scores to have settled.

Hunyuan A13B Instruct pricing

On OpenRouter, Hunyuan A13B Instruct costs $0.14 per million input tokens and $0.57 per million output tokens. Counting three tokens read for every token written, its average price is $0.248 per million, more expensive than 24 % of paid models (3.1 times cheaper than the median of $0.76).

A concrete example: a task that sends 2,000 tokens (about 1,500 words) and receives a 500-token answer costs $0.0006. At 1,000 tasks a day, budget $17 a month. The price calculator redoes this with your own volumes.

Performance and benchmarks

Epoch AI does not yet publish a capabilities index for Hunyuan A13B Instruct. We therefore show no made-up performance rating: only price, context and features count towards its score.

Features, privacy and local use

• It does not support tool calling: it is not suited to driving an AI agent that has to act.
• It can answer in an enforced JSON format (structured outputs).
• It is a reasoning model: it "thinks" before answering, which helps on hard tasks but uses more output tokens.
• Its knowledge stops at March 2025.

Its weights are open and downloadable from Hugging Face (other licence): you can run it on your own machines without sending your data to a third party. With 80,393,183,232 billion parameters, it needs about 44,923,191,833 GB of memory at 4-bit quantisation. Check with the VRAM calculator. It was downloaded 68,951 times on Hugging Face last month.

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