diff --git a/agent/model_metadata.py b/agent/model_metadata.py
index e9ec4bf03a7..2e0e3a65128 100644
--- a/agent/model_metadata.py
+++ b/agent/model_metadata.py
@@ -211,9 +211,8 @@ DEFAULT_CONTEXT_LENGTHS = {
     # matches "grok-4.20-0309-reasoning" / "-non-reasoning" / "-multi-agent-0309".
     "grok-build": 256000,       # grok-build-0.1
     "grok-code-fast": 256000,   # grok-code-fast-1
-    "grok-4-1-fast": 2000000,   # grok-4-1-fast-(non-)reasoning
     "grok-2-vision": 8192,      # grok-2-vision, -1212, -latest
-    "grok-4-fast": 2000000,     # grok-4-fast-(non-)reasoning
+    "grok-4-fast": 2000000,     # grok-4-fast-(non-)reasoning, also matches -reasoning
     "grok-4.20": 2000000,       # grok-4.20-0309-(non-)reasoning, -multi-agent-0309
     "grok-4.3": 1000000,        # grok-4.3, grok-4.3-latest — 1M context per docs.x.ai
     "grok-4": 256000,           # grok-4, grok-4-0709
diff --git a/tests/agent/test_model_metadata.py b/tests/agent/test_model_metadata.py
index e905c3e1f6b..e889f2e67bd 100644
--- a/tests/agent/test_model_metadata.py
+++ b/tests/agent/test_model_metadata.py
@@ -161,7 +161,6 @@ class TestDefaultContextLengths:
         # Values sourced from models.dev (2026-04).
         expected = {
             "grok-4.20": 2000000,
-            "grok-4-1-fast": 2000000,
             "grok-4-fast": 2000000,
             "grok-4": 256000,
             "grok-build": 256000,
@@ -190,8 +189,6 @@ class TestDefaultContextLengths:
                 ("grok-4.20-0309-reasoning", 2000000),
                 ("grok-4.20-0309-non-reasoning", 2000000),
                 ("grok-4.20-multi-agent-0309", 2000000),
-                ("grok-4-1-fast-reasoning", 2000000),
-                ("grok-4-1-fast-non-reasoning", 2000000),
                 ("grok-4-fast-reasoning", 2000000),
                 ("grok-4-fast-non-reasoning", 2000000),
                 ("grok-4", 256000),
diff --git a/website/docs/integrations/providers.md b/website/docs/integrations/providers.md
index 9c51961c257..81dc3122d7c 100644
--- a/website/docs/integrations/providers.md
+++ b/website/docs/integrations/providers.md
@@ -264,7 +264,7 @@ When using the Z.AI / GLM provider, Hermes automatically probes multiple endpoin
 
 ### xAI (Grok) — Responses API + Prompt Caching
 
-xAI is wired through the Responses API (`codex_responses` transport) for automatic reasoning support on Grok 4 models — no `reasoning_effort` parameter needed, the server reasons by default. Set `XAI_API_KEY` in `~/.hermes/.env` and pick xAI in `hermes model`, or drop `grok` as a shortcut into `/model grok-4-1-fast-reasoning`.
+xAI is wired through the Responses API (`codex_responses` transport) for automatic reasoning support on Grok 4 models — no `reasoning_effort` parameter needed, the server reasons by default. Set `XAI_API_KEY` in `~/.hermes/.env` and pick xAI in `hermes model`, or drop `grok` as a shortcut into `/model grok-4-fast-reasoning`.
 
 SuperGrok and X Premium+ subscribers can sign in with browser OAuth instead of using an API key — pick **xAI Grok OAuth (SuperGrok / Premium+)** in `hermes model`, or run `hermes auth add xai-oauth`. The same OAuth bearer token is automatically reused by direct-to-xAI tools (TTS, image gen, video gen, transcription). See the [xAI Grok OAuth guide](../guides/xai-grok-oauth.md) for the full flow — and if Hermes runs on a remote host, also see [OAuth over SSH / Remote Hosts](../guides/oauth-over-ssh.md) for the required `ssh -L` tunnel.