CATCH #2508
DETECTED NOV 5, 2026 19:10 UTC
THE CATCHscore 10/10
EXHIBIT 2508 · FLASH
Nov 5, 2026 19:10 UTC
pypi
anthropic
Anthropic 2.6.0 introduces new model IDs 'claude-opus-4-8' and 'claude-haiku-5-5', alongside new beta features for messages, environments, and an admin sign-out endpoint.
READY TO POST:
anthropic's latest pypi package, 2.6.0, just dropped with what looks like new model ids: 'claude-opus-4-8' and 'claude-haiku-5-5'. 👀
peeking into anthropic 2.6.0 and seeing a new beta fallback middleware for messages and some environment worker stuff. also an admin user sign out endpoint!
EVIDENCE — the receipts
anthropic 2.5.0 -> 2.6.0: +236 strings, -869 strings, 89 interesting
[model_id] (2)
+ py
client = Anthropic(middleware=[BetaRefusalFallbackMiddleware([{"model": "claude-opus-4-8"}])])
state = BetaFallbackState()
with state:
message = client.beta.messages.create(**params)
+ python
with client.messages.stream(
model="claude-haiku-5-5",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello!"}],
) as stream:
for text in stream.text_stream:
print(text, end="", flush=True)
[feature_flag] (4)
+ py
client = Anthropic(middleware=[BetaRefusalFallbackMiddleware([{"model": "claude-opus-4-8"}])])
state = BetaFallbackState()
with state:
message = client.beta.messages.create(**params)
+ anthropic-beta: admin-user-sign-out-2026-10-08
+ py
with client.beta.messages.stream(...) as stream:
for chunk in stream:
...
+ py
client.beta.environments.work.worker(environment_id=..., environment_key=...)
[endpoint] (1)
+ /v1/organizations/users/{user_id}/sign_out
[sentence] (87)
+ py
client = Anthropic(middleware=[BetaRefusalFallbackMiddleware([{"model": "claude-opus-4-8"}])])
state = BetaFallbackState()
with state:
message = client.beta.messages.create(**params)
+ python
with client.messages.stream(
model="claude-haiku-5-5",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello!"}],
) as stream:
for text in stream.text_stream:
print(text, end="", flush=True)
+ py
with client.beta.messages.stream(...) as stream:
for chunk in stream:
...
+ py
client.beta.environments.work.worker(environment_id=..., environment_key=...)
+ ) whose option is unset has the client's own, so it reads none of them either.
"""
class RequestOptions(TypedDict, total=False):
headers: Headers
max_retries: int
timeout: float | Timeout | None
params: Query
extra_json: AnyMapping
idempotency_key: str
caught by the 20-minute sweep ·
the live wire · all receipts