GPT-5.6 Luna vs Grok 4.3
A side-by-side comparison of GPT-5.6 Luna and Grok 4.3 — intelligence, context, capabilities, and price.
| Spec | ||
|---|---|---|
| Context window | 1.1M | 1M |
| Streaming | ||
| Reasoning | ||
| Tool use | ||
| Web search | ||
| Vision (image input) | ||
| Document input | ||
| Video | ||
| Audio |
GPT-5.6 Luna pricing
- Input$1 / 1M tokens
- Cached input$0.1 / 1M tokens
- Cache write$1.25 / 1M tokens
- Output$6 / 1M tokens
- Web search (when used)$10 / 1,000 calls
Provider-equivalent rates. Higher reasoning can use more output tokens. TryAI charges a one-credit minimum and rounds each run's aggregate cost up once.
View GPT-5.6 Lunadetails →Grok 4.3 pricing
- Under 200K prompt tokens · Input$1.25 / 1M tokens
- Under 200K prompt tokens · Cached input$0.2 / 1M tokens
- Under 200K prompt tokens · Output$2.5 / 1M tokens
- 200K+ prompt tokens · Input$2.5 / 1M tokens
- 200K+ prompt tokens · Cached input$0.4 / 1M tokens
- 200K+ prompt tokens · Output$5 / 1M tokens
- Web search (when used)$5 / 1,000 calls
Provider-equivalent rates. Higher reasoning can use more output tokens. TryAI charges a one-credit minimum and rounds each run's aggregate cost up once.
View Grok 4.3details →GPT-5.6 Luna vs Grok 4.3: FAQ
- Is GPT-5.6 Luna better than Grok 4.3?
- Fastest, most affordable GPT-5.6 tier — outperforms Claude Opus 4.8 on the Coding Agent Index at roughly a quarter of the cost. xAI flagship. Configurable reasoning, 1M context, and optional live web knowledge at low frontier pricing. The best choice depends on your workload — compare context window, capabilities, and price above, or try both on TryAI.
- Which is cheaper, GPT-5.6 Luna or Grok 4.3?
- See the pricing rows above for live per-token or per-generation costs. TryAI bills both from one pay-as-you-go balance.