Use o3 (openai/o3).
This is one of the cases where paying for more reasoning is justified.
~8.6× more per run.
This is one of the cases where paying for more reasoning is justified.
~8.6× more per run.
The task description signals deeper reasoning, trade-off analysis, or risk-heavy judgement. A larger tier earns its cost here because it handles longer reasoning chains and ambiguity more reliably.
| Model | Provider | Tier | Input cost | Output cost | Est. / 1k calls |
|---|---|---|---|---|---|
| o3 openai/o3 | Openai | Deep | $0.002000 | $0.008000 | $10.80 |
| GPT-5 Mini openai/gpt-5-mini | Openai | Moderate | $0.000250 | $0.002000 | $1.25 |
This recommendation is based on the task description alone. If you are attaching a large codebase, mention it in the input above.
Model pricing: OpenRouter model catalog, retrieved April 17, 2026. Classification: rightmodel ruleset v2.
Plan service boundaries, API contracts, and failure handling across several cooperating services.
Use o3.
Plan event contracts, delivery semantics, retries, and failure handling across multiple services.
Use o3.
Diagnose a timeout in a known request path with logs, timings, and a contained service boundary.
Use GPT-5 Mini.