GPT-6 Luna vs Grok 4.7
GPT-6 Luna scores higher on the Models at Work leaderboard (66 vs 58 out of 100). GPT-6 Luna is about 19× cheaper per blended million tokens ($0.20 vs $3.74, one figure an Artificial Analysis estimate). On Artificial Analysis' independent Intelligence Index, Grok 4.7 leads 46 to 38.
| GPT-6 Luna · OpenAI | Grok 4.7 · xAI | |
|---|---|---|
| Leaderboard rank | #10 | #12 |
| Score (0–100) | 66 | 58 |
| Tier | Fast and cheap | Workhorse |
| Price per 1M tokens | $0.10 in · $0.50 out | $3.74 blended (estimate) |
| Context window | 1M | 500K |
| Open weights | No | No |
| Artificial Analysis Intelligence Index | 38 | 46 |
| Best for | ChatGPT Free and Go tier, Simple extraction, Cost floors | X-integrated products |
Choose GPT-6 Luna if…
- you need chatgpt free and go tier
- you need simple extraction
- you need cost floors
OpenAI's ten-cent model: the one every ChatGPT Free user now has, and the one Haiku users keep comparing themselves to.
Choose Grok 4.7 if…
- you need x-integrated products
Mid-table on the index at a frontier price, with a smaller context window than everyone above it.
Caveats: 500K context is the smallest in the table. Listed by Artificial Analysis under the creator's current corporate name.
Questions people ask
Which is better, GPT-6 Luna or Grok 4.7?
GPT-6 Luna scores higher on the Models at Work leaderboard (66 vs 58 out of 100). GPT-6 Luna is about 19× cheaper per blended million tokens ($0.20 vs $3.74, one figure an Artificial Analysis estimate). On Artificial Analysis' independent Intelligence Index, Grok 4.7 leads 46 to 38.
When should I choose GPT-6 Luna over Grok 4.7?
Choose GPT-6 Luna for chatgpt free and go tier, simple extraction, cost floors. OpenAI's ten-cent model: the one every ChatGPT Free user now has, and the one Haiku users keep comparing themselves to.
When should I choose Grok 4.7 over GPT-6 Luna?
Choose Grok 4.7 for x-integrated products. Mid-table on the index at a frontier price, with a smaller context window than everyone above it.
Which is cheaper, GPT-6 Luna or Grok 4.7?
GPT-6 Luna costs $0.10 per million input tokens and $0.50 per million output tokens on OpenAI's list price (OpenAI API pricing, read Oct 10, 2026). xAI does not publish a simple list price for Grok 4.7; Artificial Analysis estimates a blended $3.74 per million tokens (three input to one output).
Scores come from the Models at Work leaderboard: Score is 0 to 100: 50% independent evals normalised within this table, 20% price-performance, 15% practitioner sentiment from Signals and community threads, 15% operational fit (context, speed, availability, open weights). Models within three points are a tie in practice. Vendor-published figures are labelled as such and never counted as independent. Prices are vendor list prices where published; blended figures assume three input tokens per output token.