8fd9fafc84
Anthropic returns HTTP 429 'Extra usage is required for long context requests' when a Claude Max subscription doesn't include the 1M context tier. This is NOT a transient rate limit — retrying won't help. Only applies to Sonnet models (Opus 1M is general access). Detects this specific error before the generic rate-limit handler and: 1. Reduces context_length from 1M to 200k (the standard tier) 2. Triggers context compression to fit 3. Retries with the reduced context The reduction is session-scoped (not persisted) so it auto-recovers if the user later enables extra usage on their subscription. Fixes: Sonnet 4.6 instant rate limits on Claude Max without extra usage
210 lines
7.1 KiB
Python
210 lines
7.1 KiB
Python
"""Tests for Anthropic Sonnet long-context tier 429 handling.
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When Claude Max users without "extra usage" hit the 1M context tier
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on Sonnet, Anthropic returns HTTP 429 "Extra usage is required for long
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context requests." This is NOT a transient rate limit — the agent should
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reduce context_length to 200k and compress instead of retrying.
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Only Sonnet is affected — Opus 1M is general access.
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"""
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import pytest
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from types import SimpleNamespace
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from unittest.mock import MagicMock, patch
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# ---------------------------------------------------------------------------
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# Detection logic
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# ---------------------------------------------------------------------------
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class TestLongContextTierDetection:
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"""Verify the detection heuristic matches the Anthropic error."""
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@staticmethod
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def _is_long_context_tier_error(status_code, error_msg, model="claude-sonnet-4.6"):
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error_msg = error_msg.lower()
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return (
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status_code == 429
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and "extra usage" in error_msg
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and "long context" in error_msg
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and "sonnet" in model.lower()
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)
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def test_matches_anthropic_error(self):
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assert self._is_long_context_tier_error(
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429,
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"Extra usage is required for long context requests.",
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)
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def test_matches_lowercase(self):
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assert self._is_long_context_tier_error(
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429,
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"extra usage is required for long context requests.",
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)
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def test_matches_openrouter_model_id(self):
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assert self._is_long_context_tier_error(
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429,
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"Extra usage is required for long context requests.",
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model="anthropic/claude-sonnet-4.6",
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)
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def test_matches_nous_model_id(self):
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assert self._is_long_context_tier_error(
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429,
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"Extra usage is required for long context requests.",
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model="claude-sonnet-4-6",
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)
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def test_rejects_opus(self):
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"""Opus 1M is general access — should NOT trigger reduction."""
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assert not self._is_long_context_tier_error(
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429,
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"Extra usage is required for long context requests.",
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model="claude-opus-4.6",
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)
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def test_rejects_opus_openrouter(self):
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assert not self._is_long_context_tier_error(
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429,
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"Extra usage is required for long context requests.",
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model="anthropic/claude-opus-4.6",
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)
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def test_rejects_normal_429(self):
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assert not self._is_long_context_tier_error(
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429,
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"Rate limit exceeded. Please retry after 30 seconds.",
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)
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def test_rejects_wrong_status(self):
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assert not self._is_long_context_tier_error(
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400,
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"Extra usage is required for long context requests.",
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)
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def test_rejects_partial_match(self):
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"""Both 'extra usage' AND 'long context' must be present."""
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assert not self._is_long_context_tier_error(
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429, "extra usage required"
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)
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assert not self._is_long_context_tier_error(
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429, "long context requests not supported"
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)
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# ---------------------------------------------------------------------------
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# Context reduction
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# ---------------------------------------------------------------------------
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class TestContextReduction:
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"""When the long-context tier error fires, context_length should
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drop to 200k and the reduced flag should be set correctly."""
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def _make_compressor(self, context_length=1_000_000, threshold_percent=0.5):
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c = SimpleNamespace(
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context_length=context_length,
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threshold_percent=threshold_percent,
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threshold_tokens=int(context_length * threshold_percent),
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_context_probed=False,
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_context_probe_persistable=False,
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)
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return c
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def test_reduces_1m_to_200k(self):
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comp = self._make_compressor(1_000_000)
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reduced_ctx = 200_000
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if comp.context_length > reduced_ctx:
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comp.context_length = reduced_ctx
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comp.threshold_tokens = int(reduced_ctx * comp.threshold_percent)
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comp._context_probed = True
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comp._context_probe_persistable = False
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assert comp.context_length == 200_000
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assert comp.threshold_tokens == 100_000
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assert comp._context_probed is True
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# Must NOT persist — subscription tier, not model capability
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assert comp._context_probe_persistable is False
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def test_no_reduction_when_already_200k(self):
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comp = self._make_compressor(200_000)
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reduced_ctx = 200_000
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original = comp.context_length
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if comp.context_length > reduced_ctx:
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comp.context_length = reduced_ctx
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assert comp.context_length == original # unchanged
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def test_no_reduction_when_below_200k(self):
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comp = self._make_compressor(128_000)
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reduced_ctx = 200_000
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original = comp.context_length
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if comp.context_length > reduced_ctx:
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comp.context_length = reduced_ctx
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assert comp.context_length == original # unchanged
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# ---------------------------------------------------------------------------
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# Integration: agent error handler path
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# ---------------------------------------------------------------------------
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class TestAgentErrorPath:
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"""Verify the long-context 429 doesn't hit the generic rate-limit
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or client-error handlers."""
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def test_long_context_429_not_treated_as_rate_limit(self):
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"""The error should be intercepted before the generic
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is_rate_limited check fires a fallback switch."""
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error_msg = "extra usage is required for long context requests."
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status_code = 429
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model = "claude-sonnet-4.6"
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_is_long_context_tier_error = (
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status_code == 429
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and "extra usage" in error_msg
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and "long context" in error_msg
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and "sonnet" in model.lower()
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)
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assert _is_long_context_tier_error
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def test_opus_429_falls_through_to_rate_limit(self):
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"""Opus should NOT match — falls through to generic rate-limit."""
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error_msg = "extra usage is required for long context requests."
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status_code = 429
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model = "claude-opus-4.6"
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_is_long_context_tier_error = (
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status_code == 429
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and "extra usage" in error_msg
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and "long context" in error_msg
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and "sonnet" in model.lower()
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)
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assert not _is_long_context_tier_error
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def test_normal_429_still_treated_as_rate_limit(self):
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"""A normal 429 should NOT match the long-context check."""
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error_msg = "rate limit exceeded"
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status_code = 429
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model = "claude-sonnet-4.6"
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_is_long_context_tier_error = (
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status_code == 429
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and "extra usage" in error_msg
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and "long context" in error_msg
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and "sonnet" in model.lower()
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)
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assert not _is_long_context_tier_error
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is_rate_limited = (
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status_code == 429
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or "rate limit" in error_msg
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)
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assert is_rate_limited
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