Top 10 Grok API Platforms with Free Credits for Grok 4.5 in 2026

Testing Grok 4.5 without free credits requires committing money to a model before validating it on a specific workload. A single 500K-context request can consume $1.50+ in tokens at official rates, which adds friction for developers evaluating multiple providers in parallel.
Every platform in this list offers some form of free credit for Grok 4.5, but the amount, expiry period, and post-trial pricing vary substantially. Some provide $5 with a 30-day expiry; others offer smaller amounts without e