Promote K2.6 to flagship, demote K2.5 to sonnet

aallan · claude · aallan · commit 609171d37075 · 2026-05-12T10:31:31.000+01:00
The previous comment defended placing K2.6 in the sonnet slot 'for now' on the grounds that K2.6 is the new flagship — which is self-contradictory if you read it twice. Moonshot promoted K2.6 to its flagship line; the chart tier should reflect that. K2.5 moves to sonnet, joining Claude Sonnet 4 and GPT-4o as 'previous-generation / secondary slot from each provider' — a tighter semantic grouping than the prior mix anyway.

No code or test surface affected; chart generation is unchanged in mechanics. Registry-only change.

Co-Authored-By: Claude Opus 4.6 &lt;noreply@anthropic.com&gt;
diff --git a/scripts/plot_results.py b/scripts/plot_results.py
@@ -93,18 +93,17 @@ class ModelSpec:
 
 
 MODELS: list[ModelSpec] = [
-    # Flagship row
+    # Flagship row — current top-tier model from each provider.
     ModelSpec("Claude Opus 4", "claude-opus-4-20250514", "flagship"),
     ModelSpec("GPT-4.1", "gpt-4.1-2025-04-14", "flagship"),
-    ModelSpec("Kimi K2.5", "moonshot-kimi-k2.5", "flagship"),
-    # Sonnet row
+    ModelSpec("Kimi K2.6", "moonshot-kimi-k2.6", "flagship"),
+    # Sonnet row — previous-generation / secondary slot from each provider.
+    # Kimi K2.5 moves here from flagship after Moonshot promoted K2.6 to
+    # the active flagship-line slot (kimi-k2-turbo-preview deprecated
+    # 2026-05-25, see #68).
     ModelSpec("Claude Sonnet 4", "claude-sonnet-4-20250514", "sonnet"),
     ModelSpec("GPT-4o", "gpt-4o", "sonnet"),
-    # K2.6 lands in the sonnet slot for now (replacing kimi-k2-turbo-preview,
-    # deprecated 2026-05-25). Semantically K2.6 is the new flagship-line model
-    # rather than a "secondary/cheaper" variant; tier placement to be revisited
-    # in the next re-sweep — see issue #68.
-    ModelSpec("Kimi K2.6", "moonshot-kimi-k2.6", "sonnet"),
+    ModelSpec("Kimi K2.5", "moonshot-kimi-k2.5", "sonnet"),
 ]
 
 # Mode label -> glob pattern fragment inserted between prefix and bench-VER.
