SWE-2
SWE-2 is worth evaluating for coding, agents, and json / tool use when its provider route and context window match the workload.
Use it for
- Teams evaluating coding, agents, and json / tool use
- Buyers comparing 1 tracked provider route
Do not use it for
- Vision or document-understanding workloads
- Family
- SWE-2
- Released
- 2026-09-10
- Parameters
- 2.8T (base: Kimi K3)
- Specialization
- coding
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Reinforcement Learning
Cheapest of 1 route · Devin
About
SWE-2 is Cognition's proprietary coding model for long-horizon asynchronous software-engineering tasks in Devin, launched September 10, 2026. Post-trained from the Kimi K3 2.8T-parameter base with additional RL at multi-trillion-parameter scale, SWE-2 pushes the cost–performance Pareto frontier and is available through Devin Desktop and CLI at launch, with rollout to Devin Web and Fusion.
Top use-case fit: coding, agents, and build tasks
Coding
Included by capability and metadata signals in the decision map.
Agents
Included by capability and metadata signals in the decision map.
JSON / Tool use
Included by capability and metadata signals in the decision map.
Provider price ladder
Compare API pricing across 1 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Route |
|---|---|---|---|
| Devin | - | - | ServerlessPartial |
Capabilities
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
Cheapest of 1 route · Devin