GPT Daybreak Blue vs Grok 4 1 Fast pricing
Side-by-side token pricing for GPT Daybreak Blue (OpenAI) and Grok 4 1 Fast (xAI), plus the total cost at three workload sizes so the crossover point is obvious. Prices refreshed 2026-09-13 13:40 UTC.
| Metric | GPT Daybreak Blue | Grok 4 1 Fast |
|---|---|---|
| Input $/1M tokens | $4 | $1.25 |
| Output $/1M tokens | $20 | $2.5 |
| Cached input $/1M | $0.4 | $0.2 |
| Context window | 1.1M | 2M |
| Max output | 128K | 2M |
| Vision | yes | yes |
| Tool calling | yes | yes |
| Cache pricing | yes | yes |
Total cost by workload
| Workload | GPT Daybreak Blue | Grok 4 1 Fast | Cheaper |
|---|---|---|---|
| 1M tokens in · 300K out | $10 | $2 | Grok 4 1 Fast (80% less) |
| 10M tokens in · 3M out | $100 | $20 | Grok 4 1 Fast (80% less) |
| 100M tokens in · 30M out | $1000 | $200 | Grok 4 1 Fast (80% less) |
On blended cost (weighted 3:1 toward input), Grok 4 1 Fast comes out cheaper by roughly 69% on input pricing. Pick Grok 4 1 Fast when the workload is price-sensitive and its context window covers your prompts; GPT Daybreak Blue is the one to benchmark if you need vision, reasoning depth, or a different quality profile.
Frequently asked
› Is GPT Daybreak Blue cheaper than Grok 4 1 Fast?
On input pricing, Grok 4 1 Fast is cheaper ($1.25 vs $4 per 1M tokens). On blended cost the winner is Grok 4 1 Fast, because output tokens are weighted differently for most workloads.
› Which has the larger context window?
Grok 4 1 Fast offers the larger context (2M tokens).
› Do these prices include prompt caching?
Cached input is priced separately where a provider publishes a cache rate; the table above lists it per model so the comparison stays like-for-like.