Breaking

xAI's Grok 4.5 and Meta's Muse Spark 1.1 Intensify Race for AI's Third Place as Seedance 2.5 Slips

July 12, 2026 at 04:36 EDT

Foundation Models
AI Agents
Media Generation

A cluster of major model launches this week reshaped the contest for the No. 3 position among leading AI labs, as xAI shipped Grok 4.5 and Meta released Muse Spark 1.1, while ByteDance's Seedance 2.5 saw its public API access pushed back.

Launch Week · The Race for No. 3

Three flagship launches collide as the fight for third place sharpens

In a single week xAI shipped Grok 4.5 and Meta released Muse Spark 1.1, while ByteDance's Seedance 2.5 had its public API access pushed back — as release cycles compress from quarterly toward biweekly.

$2 / $6

Grok 4.5 price per M input / output tokens

30s

Seedance 2.5 native single-clip length — double 2.0

Multimodal reference inputs supported by Seedance 2.5

Seedance 2.5 — clip length doubled

Native single-clip generation vs. the previous version, drawn to scale.

15s

Seedance 2.0

30s

Seedance 2.5

Grok 4.5 · xAI

SHIPPED

Coding · agentic tasks · knowledge work. $2/$6 per M tokens; knowledge cutoff Feb 1, 2026.

Muse Spark 1.1 · Meta

SHIPPED

Multimodal reasoning · tools · coding. Public Meta Model API preview and expanded context window.

Seedance 2.5 · ByteDance

DELAYED

Video generation, up to 4K. API access pushed to ~July 16 enterprise beta amid copyright concerns.

The accelerating cadence

Model cycles are compressing from quarterly toward monthly — and biweekly.

Quarterly

→

Monthly

→

Biweekly

With the top two labs seen as settled, continuous intelligence gains and frequent updates have become the decisive levers in the churning battle for third.

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