Home › Compare › SpaceXAI: Grok 4.3 vs SpaceXAI: Grok 4.5
SpaceXAI: Grok 4.3 vs SpaceXAI: Grok 4.5: API Pricing Compared
Comparing SpaceXAI: Grok 4.3 and SpaceXAI: Grok 4.5: on combined input+output list price, SpaceXAI: Grok 4.3 is cheaper at $3.75 vs $8 per 1M tokens — a difference of $4.25 (53%). SpaceXAI: Grok 4.3 costs $1.25 in / $2.5 out with a 1,000,000-token context; SpaceXAI: Grok 4.5 costs $2 in / $6 out with a 500,000-token context.
| SpaceXAI: Grok 4.3 | SpaceXAI: Grok 4.5 | |
|---|---|---|
| Input /1M | $1.25 | $2 |
| Output /1M | $2.5 | $6 |
| Cached input /1M | $0.2 | $0.3 |
| Context window | 1,000,000 | 500,000 |
| Max output tokens | 900,000 | 450,000 |
| Cost @ 10M in + 2M out / mo | $17.5 | $32 |
Estimate your own workload in the cost calculator, or open the full pages for SpaceXAI: Grok 4.3 and SpaceXAI: Grok 4.5.
Frequently asked questions
Which is cheaper, SpaceXAI: Grok 4.3 or SpaceXAI: Grok 4.5?
SpaceXAI: Grok 4.3 is cheaper on combined list price: $3.75 vs $8 per 1M tokens (input + output). At 10M input + 2M output tokens per month, SpaceXAI: Grok 4.3 costs $17.5 and SpaceXAI: Grok 4.5 costs $32.
Which has the larger context window, SpaceXAI: Grok 4.3 or SpaceXAI: Grok 4.5?
SpaceXAI: Grok 4.3 has a context window of 1,000,000 tokens; SpaceXAI: Grok 4.5 has 500,000 tokens. The larger one is SpaceXAI: Grok 4.3.
Price snapshot October 21, 2026, refreshed daily.