Coding with GPT-6.1 Sol

Coding tests of Sol released two days after Sonnet 5.5, noting the odd behaviours seen while building with it.

Follow-up head-to-head with the creator reporting a clear winner after repeated trials.

Coding experiments with Sol from a channel that benchmarks models on real projects.

Early impressions of Sol at DevDay with the near-Astra claim tested at a fraction of the price.

Hands-on test of agentic coding and frontend design asking if Sol can replace Opus 5.5.

Measurements from 24 hours of testing showing Sol 6.1 much slower than GPT-6 Sol and GPT-5.6 Sol at xhigh.

Scored comparison of coding output where Sol 6.1 lands near Grok 4.7 behind Astra and Opus 5.5.

Experiment pairing GPT-6.1 Sol as planner with a local Qwen3.8-27B coder on an RTX 3090, with timings and costs.

Port of Chromium Legacy 124 to Mac OS X Snow Leopard, done with Sol 6.1 and Astra.

.NET 10 demo of GPT-6.1 Sol in Microsoft Foundry using Microsoft.Extensions.AI and the Responses API, covering PR triage, an approval-gated tool call and an evaluation harness.

Attempt to port the LDLib2 library to the GTNH Minecraft modpack using GPT-6.1 Sol at xhigh effort.

Lightweight Linux desktop mascots inspired by shimeji-ee, written entirely by Sol as a test of the model.

A developer's first agentic-coding experiment with GPT-6.1 Sol, producing an arena, a memory allocator and Conway's game of life.

Four jobs with three attempts each for Claude Sonnet 5.5 and GPT-6.1 Sol, with briefs, checks and every attempt published for replication.

Italian collection of the four tasks used to compare Sonnet 5.5, Opus 5.5 and GPT-6.1 Sol, with identical text and effort for each.