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feat: respect provider context_budget_cap for cost-optimal compaction #8

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feat: respect provider context_budget_cap for cost-optimal compaction #8

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18 changes: 18 additions & 0 deletions amplifier_module_context_simple/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1183,6 +1183,16 @@ def _calculate_budget(self, token_budget: int | None, provider: Any | None) -> i
if context_window and max_output:
reserved_output = int(max_output * output_reserve_fraction)
budget = context_window - reserved_output - safety_margin
# Apply provider's cost-optimal budget cap if set
budget_cap = (
provider.get_info().defaults or {}
).get("context_budget_cap")
if budget_cap is not None:
budget = min(budget, budget_cap - safety_margin)
logger.info(
f"Budget capped by provider hint: {budget:,} "
f"(cap={budget_cap:,})"
)
logger.info(
f"Budget from provider model info: {budget:,} "
f"(context={context_window:,}, reserved_output={reserved_output:,} "
Expand All @@ -1199,6 +1209,14 @@ def _calculate_budget(self, token_budget: int | None, provider: Any | None) -> i
if context_window and max_output_tokens:
reserved_output = int(max_output_tokens * output_reserve_fraction)
budget = context_window - reserved_output - safety_margin
# Apply provider's cost-optimal budget cap if set
budget_cap = defaults.get("context_budget_cap")
if budget_cap is not None:
budget = min(budget, budget_cap - safety_margin)
logger.info(
f"Budget capped by provider hint: {budget:,} "
f"(cap={budget_cap:,})"
)
logger.info(
f"Budget from provider defaults: {budget:,} "
f"(context={context_window:,}, reserved_output={reserved_output:,} "
Expand Down