Coding router comparison
Weave Router vs Cognition Adaptive
Both products route coding prompts to models. Cognition’s Adaptive and Devin Fusion work inside Devin and Windsurf. Weave Router works inside Codex, Claude Code and Cursor, selecting for quality per token. Compare the tools your team uses and the routing logic you can inspect.
The short version
Start with the coding tools you use.
Weave Router
Routing in existing coding tools
- Route prompts in Codex, Claude Code and Cursor
- Select models across providers for quality per token
- Inspect routing logic in Apache-2.0 source
What is Weave Router?
Weave Router selects models for quality per token in Codex, Claude Code and Cursor. Easier prompts use efficient models; harder work gets frontier models. Its stated benefit is roughly twice the token runway. Setup takes about five minutes, it is free to start, and the source is Apache-2.0. Weave’s engineering intelligence platform serves 500+ organizations, from startups to Fortune 100 companies.
Cognition Adaptive
Routing inside Cognition’s coding tools
- Use Adaptive inside Devin and Windsurf
- Select models by predicted performance per prompt
- Pair frontier and sidekick agents with Devin Fusion
What is Cognition Adaptive?
Adaptive predicts which model will perform best on each prompt inside Devin and Windsurf, often using fewer tokens than always selecting a frontier model. Devin Fusion pairs a frontier agent with a cheaper sidekick. Neither routes prompts inside Codex, Claude Code or Cursor.
Side by side
How Weave Router and Cognition Adaptive compare
| What matters | Weave Router | Cognition Adaptive |
|---|---|---|
| Core approach | Routes every prompt to the best quality-per-token model | Predicts the best-performing model per prompt; Devin Fusion pairs a frontier agent with a cheaper sidekick |
| Where it runs | Inside Codex, Claude Code, and Cursor | Inside Devin and Windsurf only |
| Tool lock-in | None: works with the tools your team already uses | Requires working in Cognition’s products |
| Model coverage | Frontier and efficient models across major providers | Cognition-selected models, including its own SWE model family |
| Time to value | 5-minute setup; free to start | Toggle on inside Devin or Windsurf settings |
| Source availability | Open source (Apache-2.0) | Proprietary routing logic |
| Cost story | Roughly doubles how far a token budget goes on coding work | Consumes fewer tokens than always picking a frontier model |
| Getting started | Self-serve at router.workweave.ai, free to start | Requires a Devin or Windsurf subscription |
The key difference
Routing for one ecosystem vs. routing for your tools
Weave Router
Weave Router’s approach
Weave Router scores prompts across providers for quality per token inside Codex, Claude Code and Cursor. Its Apache-2.0 source makes the routing logic inspectable.
Cognition Adaptive
Cognition’s approach
Adaptive and Devin Fusion run inside Cognition’s products, using Cognition-selected models and proprietary routing. They fit teams already working in Devin or Windsurf.
Compare routing inside your current tools before changing your workflow.
Why Weave Router
Why teams choose Weave Router over Cognition Adaptive
Works with the tools you have
Keep Codex, Claude Code and Cursor while Weave Router routes their prompts.
No ecosystem lock-in
Route across providers without moving your team into Devin or Windsurf.
Quality-per-token on every prompt
Weave scores each prompt for quality per token, sending easier work to efficient models.
Open source (Apache-2.0)
Inspect Weave Router’s Apache-2.0 source. Adaptive’s routing remains proprietary.
Doubles your token runway
Weave’s stated benefit is roughly twice the token runway on coding workloads.
Free to start, no new subscription
Start at router.workweave.ai without a Devin or Windsurf subscription.
Choose for your workflow
When Cognition Adaptive might be the better fit
Adaptive fits teams already using Devin or Windsurf. Devin Fusion adds a frontier agent and cheaper sidekick inside Devin. If your engineers use Codex, Claude Code or Cursor, evaluate Weave Router without changing tools.
A few more details
Frequently asked questions
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Open source. Start taking your token budget twice as far.
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