Muse Spark 1.3 vs GPT-6 Luna
Muse Spark 1.3 scores higher on the Models at Work leaderboard (72 vs 66 out of 100). GPT-6 Luna is about 3.9× cheaper per blended million tokens ($0.20 vs $0.78, one figure an Artificial Analysis estimate). On Artificial Analysis' independent Intelligence Index, Muse Spark 1.3 leads 48 to 38.
| Muse Spark 1.3 · Meta | GPT-6 Luna · OpenAI | |
|---|---|---|
| Leaderboard rank | #8 | #10 |
| Score (0–100) | 72 | 66 |
| Tier | Workhorse | Fast and cheap |
| Price per 1M tokens | $0.78 blended (estimate) | $0.10 in · $0.50 out |
| Context window | Not verified | 1M |
| Open weights | Not verified | No |
| Artificial Analysis Intelligence Index | 48 | 38 |
| Arena text score | 1494 | — |
| DistressBench (Scale) | 84.88 | — |
| Best for | Latency-first products, Customer-facing chat, Meta-ecosystem teams | ChatGPT Free and Go tier, Simple extraction, Cost floors |
Choose Muse Spark 1.3 if…
- you need latency-first products
- you need customer-facing chat
- you need meta-ecosystem teams
The fastest thing in the table by a distance, and the one to beat on the stress benchmark nobody else talks about.
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.
Questions people ask
Which is better, Muse Spark 1.3 or GPT-6 Luna?
Muse Spark 1.3 scores higher on the Models at Work leaderboard (72 vs 66 out of 100). GPT-6 Luna is about 3.9× cheaper per blended million tokens ($0.20 vs $0.78, one figure an Artificial Analysis estimate). On Artificial Analysis' independent Intelligence Index, Muse Spark 1.3 leads 48 to 38.
When should I choose Muse Spark 1.3 over GPT-6 Luna?
Choose Muse Spark 1.3 for latency-first products, customer-facing chat, meta-ecosystem teams. The fastest thing in the table by a distance, and the one to beat on the stress benchmark nobody else talks about.
When should I choose GPT-6 Luna over Muse Spark 1.3?
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.
Which is cheaper, Muse Spark 1.3 or GPT-6 Luna?
Meta does not publish a simple list price for Muse Spark 1.3; Artificial Analysis estimates a blended $0.78 per million tokens (three input to one output). 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).
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.