Day 7 · 2026-10-30
15 launches checked60 claims quoted word for word113 user reports linked10 verified fixes linked26 corrections publishedLive 7 days5 of 5 founding sponsor spots left
Day 7Launch day vs. day 7
AI launches, checked against real usersLast re-stamped 30 Oct 2026

AI models / Compare

GPT-6.1 Terra vs Muse Spark Open: which delivered after 7 days?

Muse Spark Open is stamped Delivered; GPT-6.1 Terra is still Too early to call, so this comparison isn't settled yet.

GPT-6.1 TerraMuse Spark Open
VerdictToo earlyDelivered
Claims held33
Claims mixed00
Claims failed10
Claims unclear01
User reports27
Launched26 Oct 202615 Oct 2026
Last stamped30 Oct 202630 Oct 2026

No. 011 · OpenAI

GPT-6.1 Terra

Day 4 of 7
Too earlyDay 7 verdict

Cheap and the coding gain is real, but independent timing finds it about 15 to 25% faster than Sol, nowhere near 3x.

Launched
26 Oct 2026
Stamped
30 Oct 2026
Claims
✓3 held · ~0 mixed · ✗1 failed · ?0 unclear
Reports
2 (0 praise · 0 problem · 2 mixed)

What they claimed

“At max effort, Terra is over three times as token efficient as Claude Opus 5.5, and one-fourth its price per token, resulting in a ~9x lower cost per task.”
✓ Holds
“Terra is also much quicker, completing tasks over three times faster than both GPT-6 Astra and GPT-6.1 Sol.”
✗ Fails
“At maximum reasoning effort, GPT‑6.1 Terra solves 50.3% of tasks, more than double GPT‑5.6 Terra’s published score of 21.5%.”
✓ Holds
“Standard API pricing is $1 per million input tokens, $0.05 per million cached input tokens, and $5 per million output tokens.”
✓ Holds

Full receipt

No. 007 · Meta

Muse Spark Open

DeliveredDay 7 verdict

The weights, licence and specs check out, and it's live on Baseten, Fireworks, Modal, Nebius and OpenRouter. The two-Mac-Studio desktop setup is still untested.

Launched
15 Oct 2026
Stamped
30 Oct 2026
Claims
✓3 held · ~0 mixed · ✗0 failed · ?1 unclear
Reports
7 (3 praise · 3 problem · 1 mixed)

What they claimed

“Muse Spark Open is the first model in its class to run on your desktop using two Apple M5 Ultra Mac Studios with the latest MLX framework.”
? Unclear
“Muse Spark Open is available today through API platforms at Baseten, Fireworks AI, Groq, Modal, Nebius, OpenRouter and Together AI.”
✓ Holds
“We’re releasing the weights under the Muse Model License with limited commercial terms, which allow many developers to use the model for free.”
✓ Holds
“Muse Spark Open is a natively multimodal model with 816B total parameters (42B active) and a 1M-token context window.”
✓ Holds

Full receipt

Both stamps come from the public user reports linked on each receipt, under the same method. Verdicts are opinion and are never paid for.

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