On July 9, 2026, OpenAI released the GPT-5.6 model family. On the Artificial Analysis Coding Agent Index, GPT-5.6 Sol and Terra outperform Anthropic's Claude Fable 5 while having a lower estimated cost.
We have updated both the integrated MesoSim AI Assistant and the ChatGPT-hosted assistant to use GPT-5.6. The update improves response times and the accuracy of answers about MesoSim and options trading in general.
When making decisions, we always look for efficiency and outcomes that support our long-term goals.
One decision has been on our minds for a while, and now it is time to make it.
Due to low customer interest and limited trading potential, we are discontinuing support for ETH/USD and BTC/USD options data in MesoSim.
Effective March 23, 2026 : the Academia program is discontinued, and the free sign-up path is replaced by a paid 14-day trial priced at a one-time fee.
See the motivation inside this post.
On March 18, 2026, we are releasing MesoSim v3.1. This update includes more than 30 improvements and fixes across four areas:
The headline feature in this release is the direct integration of the MesoSim AI Assistant into MesoSim Portal.
Trading options can be an effective way to generate income and grow a portfolio, but results depend on process quality: disciplined research, repeatable execution, and risk controls that hold up in live markets.
Historically, MesoLive operated with a "human in the loop". With the MesoLive SDK, our customers can automate execution while keeping the controls and oversight their operation requires.