Evaluate an OpenAI API alternative on evidence
A trustworthy alternative comparison starts with your workload, not a slogan. Use the same prompts and acceptance tests when comparing compatibility, latency, error rates, limits, and total cost.
Compatibility
Check SDK base URL support, authentication headers, /v1/models, chat completions or responses, streaming, tool calls, structured output, and provider-specific extensions. Start with the cheap OpenAI API guide.
Cost and reliability
Compare current token prices, minimums, retries, rate limits, p50/p95 latency, successful completion rate, and incident history. Record test date and model IDs so the result remains honest as catalogs change.
Trust and migration
Review retention, security, key revocation, support, refunds, and API-only mirror behavior. The security overview explains the safeguards that matter before a production switch.
Frequently asked questions
Is router.cheap a drop-in replacement?
It can be compatible for common OpenAI SDK workflows, but every application should test its own endpoints, tools, streaming, errors, and model assumptions.
Will I pay less?
It may be a better fit for some workloads, but prices change. Use the live catalog and a fixed workload comparison.
Can I keep my current application code?
Usually only a base URL, key, and model need to change for common integrations; verify protocol-specific features in staging.