We are happy to release MesoSim-v3.3. This release reworks the pages you use most:

• Job Editor v2: checks as you type, problems marked in the code, autocomplete
• Backtests: search by strategy, metric conditions, and date filters
• Backtest Details: a new overview with the first entry's risk graph
• Usage allowances: weekly SimTime, 20 GB of storage, and usage credits

We are excited to introduce MesoSim-v3.2, our biggest release yet. Key features:

• Agentic Research
• Portfolio Builder with delta hedging
• StatSim, our statistical simulations module
• API Access for retail users

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.