SpaceXAI launches Grok 4.5, an 'Opus-class' coding model
SpaceXAISummarized by the ORA·tech AI assistantSpaceXAI released Grok 4.5 on July 8, its first model built for coding and agentic work, trained on real Cursor sessions and priced at $2/$6 per million tokens.
On July 8, 2026, SpaceXAI released Grok 4.5, its first model purpose-built for coding and agentic tasks. Elon Musk described it as 'an Opus-class model, but faster, more token-efficient and lower cost.'
Key points
- Built on the 1.5-trillion-parameter V9 foundation and trained on real Cursor developer session data to optimize for long, in-codebase work.
- Lands fourth on the Artificial Analysis Intelligence Index, above every open-weight model and all Gemini models.
- Priced at $2 in / $6 out per million tokens — over 60% cheaper than Opus 4.8 and GPT-5.5.
- Available in Grok Build, in Cursor (all plans) and via the SpaceXAI console; not yet available in the EU.
See SpaceXAI's official release notes for benchmarks and details.
Source
SpaceXAI
#xAI#Grok#LLM#AI coding#Cursor
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