Soup CLI vs SWE-2: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Soup CLI and SWE-2 — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
S
Soup CLI
MePlay, Inc.
Open-source CLI that runs the whole LLM post-training stack — SFT, DPO, ORPO — on a 4GB laptop GPU.
Key features
- Whole Post-Training Stack: SFT, DPO, ORPO, SimPO, KTO, and more in one CLI.
- Low-VRAM Streaming: Fine-tune Llama-3.1-8B on a 4 GB GPU by streaming the base from RAM/NVMe.
- Auto-Configured Runs: Task, LR, epochs, and quantization derived from rules instead of grid search.
- Self-Healing Training: Detects and self-corrects reward hacking mid-run.
- One-Command Migration: `soup migrate` converts LLaMA-Factory, Axolotl, and Unsloth configs.
- Ship Gate: Every checkpoint is evaluated and either passes or is rejected before saving.
- Broad Ecosystem: Integrates with HuggingFace, Ollama, vLLM, DeepSpeed, Unsloth, ONNX, TensorRT, W&B.
- MLX + Apple Adapter: First-class Apple silicon support.
Best for
- Fine-tuning open-source LLMs on a consumer laptop GPU
- Post-training alignment (DPO/ORPO) without a rented A100
- Migrating existing LLaMA-Factory / Axolotl pipelines to a simpler workflow
- Producing evaluated, ship-gated checkpoints for internal deployment
- Researchers experimenting with 23 training methods without rewriting scripts
SWE-2
Cognition
Cognition's coding model that scores 50.0% on FrontierCode 1.1 Main at 64% lower cost than comparable frontier models.
Key features
- Pareto-Frontier Cost Efficiency: Matches GPT-5.6 Sol and Fable 5/5.1 on coding benchmarks at a fraction of their price and comes within a few points of GPT-6 Astra at roughly a quarter of the cost.
- Single-Run Multi-Effort RL: A reinforcement learning algorithm trains all reasoning-effort levels in one run, applying a per-level linear cost penalty derived from the base model's local frontier slope.
- Focused Codebase Exploration: Stronger engineering judgment lets the model decide which parts of a repository matter, cutting mean steps per run from 127 to 53 at medium effort.
- Selectable Effort Levels: Ships medium, high and max reasoning settings so teams can trade additional steps and cost for accuracy on harder tasks.
- End-to-End Test Writing: Produces tests that validate an implementation end to end, catching regressions and edge cases more reliably than previous SWE models.
- Resourceful Task Recovery: When an expected route is blocked — an unavailable MCP integration, for example — it finds an alternative path to the same answer within the user's stated boundaries.
- Efficient Training and Serving Stack: NVFP4/FP8 kernels, quantization-aware training and an online draft model cut memory use and train-inference mismatch despite nearly 3x the base parameters of SWE-1.7.
- Hardened Verifier Flywheel: Triples the number of RL environments, adds instruction-following overlays, and uses earlier SWE-2 checkpoints to iteratively strengthen verifiers.
Best for
- Agentic Software Engineering: Powering Devin sessions that plan, edit, build and test changes across a real repository with minimal supervision.
- Cost-Sensitive Coding at Scale: Teams running large volumes of automated coding tasks pick a model that holds frontier-adjacent accuracy at a materially lower per-task cost.
- Terminal and Tooling Workflows: Strong Terminal-Bench results suit tasks driven through shell commands, build systems and command-line tooling.
- Regression Test Generation: Generating end-to-end tests for existing implementations to catch edge cases before a release.
- Effort-Tiered Task Routing: Routing simple tickets to medium effort and hard migrations to high or max effort within the same model deployment.
- Benchmark and Model Evaluation: Engineering leaders compare coding model options on published FrontierCode, DeepSWE and Terminal-Bench numbers alongside cost.