Hugo Vergnes trained a 3.8B-parameter LLM for $998 in compute costs, scoring 0.384 on the CORE benchmark. The interesting result isn't the price — it's that doubling context length from 1024 to 2048 tokens drove 83% of the score improvement on one key task, which says something about what benchmark numbers are actually measuring.
Fermi Sense and Ramp fine-tuned a 9B open-source model with GRPO for $500 and outperformed every frontier configuration on a catalog review task — 87.3% vs 76.9%, at 40x lower inference cost. The benchmark has a Goodhart's Law concern, but the underlying economics of task-specific RL fine-tuning are real and worth taking seriously.
Cisco releases Antares, open-weight 350M and 1B models purpose-built for vulnerability localization that beat far larger general models on finding which source files contain a known CVE's bug — using an explicit iterative investigation workflow and running locally so sensitive code never leaves your infrastructure.
IBM's Granite 4.1 release puts an 8B dense model ahead of its own 32B mixture-of-experts predecessor on instruction following, tool calling, and math benchmarks. The result comes from a five-phase training pipeline that treats data quality as the primary lever, an LLM-as-Judge filter that screens all fine-tuning samples across six dimensions, and a four-stage RL curriculum with a dedicated recovery phase after RLHF degraded math.