model: "auto"
Auto
Auto is made for long coding-agent sessions. It starts on a fast, inexpensive model and brings in a stronger one when the work calls for it.
Watches the work as it happens
You usually can't tell from the prompt how hard a task is. Auto keeps reading the session while the agent works, and changes model when the task needs it.
Start
Every session starts on a fast, inexpensive model.
Monitor
Auto tracks project size, problem difficulty and task progress as the conversation goes on, until they cross the upgrade threshold.
Upgrade
The session moves to a stronger model and carries on from where it was.
Monitoring reads the task and the agent's work so far. See what gets sent, and to whom
Good fit
- Long coding-agent sessions: Claude Code, Codex, OpenCode, Cline.
- Batches of tasks where cost per task matters.
- Teams that don't want to re-evaluate models every month.
Not a fit
- Every request must go to the strongest model available. Call that model directly.
- You need to pin one exact model version for compliance or reproducibility.
Cost and score, side by side
Each benchmark plots cost per task against score, next to single models run on the same harness and the same tasks.
Automodel: "auto"
Agent: TBD · Tasks: TBD · Runs per configuration: TBD · Cost: measured tokens × public USD prices
Agent: TBD · Tasks: TBD · Runs per configuration: TBD · Cost: measured tokens × public USD prices
Agent: TBD · Tasks: TBD · Runs per configuration: TBD · Cost: measured tokens × public USD prices
auto
- Protocols
- Chat Completions · Anthropic Messages · Responses
- Streaming
- Yes, on all three
- Input
- Text, images (routed to models that accept them)
- Tool calls
- Yes
- Thinking parameters
- Passed through; routed to models that accept them
- Context length
- TBD
- Models used
- A mix of fast open models and frontier models. The mix changes between versions; your console shows the model behind every request.
Versions
Changes to the model mix or the routing are listed here with each version.
How Auto is billedPut Auto on your next session
Change two settings in the agent you already use and see what it costs on your own work.