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Cline tests Union Alpha: near Astra and Opus 5 at ~18x lower cost

Cline plugged Union Alpha into its own harness and says its agentic coding performance is close to GPT-6 Astra and Opus 5 at roughly 18x lower expected cost.

Cline
@clineArchived 2026.09.17Originally posted 2026.09.17
Cline tests Union Alpha: near Astra and Opus 5 at ~18x lower cost
Cline @clineOriginally posted 2026.09.17
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Union Alpha (stealth model) is now free in Cline. 256k context, multimodal, built for agentic coding. It is near GPT-6 Astra and Opus 5 performance for ~18x lower expected cost.

x.com/cline/status/2100265266026590322Archived 2026.09.17 13:51