GPT-6 Astra vs Muse Spark 1.3
GPT-6 Astra scores higher on the Models at Work leaderboard (86 vs 72 out of 100). Muse Spark 1.3 is about 26× cheaper per blended million tokens ($0.78 vs $20, one figure an Artificial Analysis estimate). On Artificial Analysis' independent Intelligence Index, GPT-6 Astra leads 53 to 48.
| GPT-6 Astra · OpenAI | Muse Spark 1.3 · Meta | |
|---|---|---|
| Leaderboard rank | #2 | #8 |
| Score (0–100) | 86 | 72 |
| Tier | Frontier | Workhorse |
| Price per 1M tokens | $10 in · $50 out | $0.78 blended (estimate) |
| Context window | 1M | Not verified |
| Open weights | No | Not verified |
| Artificial Analysis Intelligence Index | 53 | 48 |
| Humanity's Last Exam, Diamond (Scale) | 60.6 | — |
| Humanity's Sixth Sense (Scale) | 53.6 | — |
| FrontierMath Erdős (Epoch) | 3% (2 of 68) | — |
| Arena text score | — | 1494 |
| DistressBench (Scale) | — | 84.88 |
| Best for | Hard reasoning, Research-grade analysis, When cost is not the constraint | Latency-first products, Customer-facing chat, Meta-ecosystem teams |
Choose GPT-6 Astra if…
- you need hard reasoning
- you need research-grade analysis
- you need when cost is not the constraint
The reasoning heavyweight: leads the hardest exams and the cipher-cracking party tricks, and charges like it.
Caveats: Long-context pricing doubles above 272K input tokens. Speed is the lowest of the frontier set in Artificial Analysis' measurement.
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.
What practitioners say
GPT-6 Astra: The launch drew the largest model thread of 2026 on Hacker News, and the stories that followed were about capability rather than cost: an Enigma message unsolved since 2005, a WWI cipher, a driving benchmark.
Questions people ask
Which is better, GPT-6 Astra or Muse Spark 1.3?
GPT-6 Astra scores higher on the Models at Work leaderboard (86 vs 72 out of 100). Muse Spark 1.3 is about 26× cheaper per blended million tokens ($0.78 vs $20, one figure an Artificial Analysis estimate). On Artificial Analysis' independent Intelligence Index, GPT-6 Astra leads 53 to 48.
When should I choose GPT-6 Astra over Muse Spark 1.3?
Choose GPT-6 Astra for hard reasoning, research-grade analysis, when cost is not the constraint. The reasoning heavyweight: leads the hardest exams and the cipher-cracking party tricks, and charges like it.
When should I choose Muse Spark 1.3 over GPT-6 Astra?
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.
Which is cheaper, GPT-6 Astra or Muse Spark 1.3?
GPT-6 Astra costs $10 per million input tokens and $50 per million output tokens on OpenAI's list price (OpenAI API pricing, read Oct 10, 2026). 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).
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.