GPT 5.4 vs Mistral Vibe Cli Fast pricing
Side-by-side token pricing for GPT 5.4 (OpenAI) and Mistral Vibe Cli Fast (Mistral AI), plus the total cost at three workload sizes so the crossover point is obvious. Prices refreshed 2026-09-13 13:40 UTC.
| Metric | GPT 5.4 | Mistral Vibe Cli Fast |
|---|---|---|
| Input $/1M tokens | $2.5 | $0.15 |
| Output $/1M tokens | $15 | $0.6 |
| Cached input $/1M | $0.25 | $0.015 |
| Context window | 1.1M | 262K |
| Max output | 128K | 262K |
| Vision | yes | yes |
| Tool calling | yes | yes |
| Cache pricing | yes | no |
Total cost by workload
| Workload | GPT 5.4 | Mistral Vibe Cli Fast | Cheaper |
|---|---|---|---|
| 1M tokens in · 300K out | $7 | $0.33 | Mistral Vibe Cli Fast (95% less) |
| 10M tokens in · 3M out | $70 | $3.3 | Mistral Vibe Cli Fast (95% less) |
| 100M tokens in · 30M out | $700 | $33 | Mistral Vibe Cli Fast (95% less) |
On blended cost (weighted 3:1 toward input), Mistral Vibe Cli Fast comes out cheaper by roughly 94% on input pricing. Pick Mistral Vibe Cli Fast when the workload is price-sensitive and its context window covers your prompts; GPT 5.4 is the one to benchmark if you need vision, reasoning depth, or a different quality profile.
Frequently asked
› Is GPT 5.4 cheaper than Mistral Vibe Cli Fast?
On input pricing, Mistral Vibe Cli Fast is cheaper ($0.15 vs $2.5 per 1M tokens). On blended cost the winner is Mistral Vibe Cli Fast, because output tokens are weighted differently for most workloads.
› Which has the larger context window?
GPT 5.4 offers the larger context (1.1M 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.