Koala AI makes GPT-5 the default model in KoalaChat at 1 credit per run.
GPT-5 replaces GPT-4.1 in KoalaWriter; GPT-4.1 Mini stays the default.
In the API, GPT-5 is priced at 2 credits, with GPT-4.1 Mini as default.
Koala cites a more recent knowledge cutoff and improved prompt following.
Deep Research can be paired with GPT-5 for higher-accuracy articles.

Koala AI has adopted GPT-5 across its products, making it the default model in KoalaChat and replacing GPT-4.1 in KoalaWriter, while keeping GPT-4.1 Mini as the cost-efficient default.

The company says GPT-5 offers stronger writing quality, better prompt adherence, and a more recent knowledge cutoff.

Pricing shifts place GPT-5 at 1 credit per run in KoalaChat and 2 credits via the API. The update is live now, according to Koala AI’s announcement on its website

Model changes across products

Koala AI states that GPT-5 is now the default model in KoalaChat. It supersedes both GPT-4.1 Mini and GPT-4.1. In KoalaWriter, GPT-5 replaces GPT-4.1, while GPT-4.1 Mini remains the default option for users seeking lower-cost output.

Pricing and credits

Koala AI uses a credit-based system for inference runs. In KoalaChat, GPT-5 costs 1 credit per request, described as half the price of GPT-4.1. In the API (Application Programming Interface), Koala prices GPT-5 at 2 credits per request, and GPT-4.1 Mini remains the default selection. These details come from Koala AI’s product announcement.

What GPT-5 promises Koala highlights three improvements with GPT-5: higher-quality writing, stronger prompt compliance, and a more recent knowledge cutoff, which can reduce outdated responses. As Koala AI puts it, “GPT-5 delivers higher-quality writing and follows prompts more accurately than older models.” The company also says “it has a more recent knowledge cutoff, enabling it to produce more up-to-date and accurate content.” Source: Koala AI announcement (Koala AI).

How Deep Research fits in

Koala recommends pairing Deep Research with GPT-5 in KoalaWriter to produce articles with higher factual accuracy and quality. The company positions this as an add-on workflow rather than a model change. Source: Koala AI (Koala AI).

Availability and defaults

KoalaChat: GPT-5 is the default model; cost is 1 credit per run.
API: GPT-5 costs 2 credits; GPT-4.1 Mini remains the default.
KoalaWriter: GPT-5 replaces GPT-4.1; GPT-4.1 Mini remains the default for cost efficiency.

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