diff --git a/QUICKSTART.md b/QUICKSTART.md
index 0412cd6..c2d6d21 100644
--- a/QUICKSTART.md
+++ b/QUICKSTART.md
@@ -22,27 +22,26 @@ The notebook is the authoring entry point for:
 ## 3) Convert notebook spec to TOML
 Export the notebook semantics into TOML:
 ```bash
-uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/spec_black_scholes.toml --overwrite
+uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/black_scholes_blueprint.toml --overwrite
 ```
-
-## 4) Bridge spec TOML to runtime TOML
-Generate an executable pricing config from the notebook spec artefact:
+## 4) Bridge blueprint TOML to pricing TOML
+Generate an executable pricing config from the notebook blueprint artefact:
 ```bash
-uv run pdealchemy spec-to-runtime-toml examples/notebooks/spec_black_scholes.toml --output examples/notebooks/spec_black_scholes.runtime.toml --overwrite
+uv run pdealchemy spec-to-runtime-toml examples/notebooks/black_scholes_blueprint.toml --output examples/notebooks/black_scholes_pricing.toml --overwrite
 ```
 
 ## 5) Validate the equation library
 Run constrained LaTeX validation for equations in `library/` together with runtime schema checks:
 ```bash
-uv run pdealchemy validate examples/notebooks/spec_black_scholes.runtime.toml --equation-library library
+uv run pdealchemy validate examples/notebooks/black_scholes_pricing.toml --equation-library library
 ```
 
 ## 6) Run baseline pricing and explain outputs
 Use the bridged runtime config for pricing and explainability checks:
 ```bash
-uv run pdealchemy validate examples/notebooks/spec_black_scholes.runtime.toml --analytical --tolerance 0.75
-uv run pdealchemy price examples/notebooks/spec_black_scholes.runtime.toml
-uv run pdealchemy explain examples/notebooks/spec_black_scholes.runtime.toml --format markdown
+uv run pdealchemy validate examples/notebooks/black_scholes_pricing.toml --analytical --tolerance 0.75
+uv run pdealchemy price examples/notebooks/black_scholes_pricing.toml
+uv run pdealchemy explain examples/notebooks/black_scholes_pricing.toml --format markdown
 ```
 
 ## 7) Optional: run the full baseline chain in one command
diff --git a/README.md b/README.md
index 8c4b90c..b68328f 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ uv run pdealchemy validate path/to/config.toml
 uv run pdealchemy explain path/to/config.toml --format markdown
 uv run pdealchemy validate path/to/config.toml --analytical --tolerance 0.75
 uv run pdealchemy validate path/to/config.toml --equation-library library
-uv run pdealchemy spec-to-runtime-toml path/to/spec.toml --output path/to/runtime.toml --overwrite
+uv run pdealchemy spec-to-runtime-toml path/to/spec.toml --output path/to/pricing.toml --overwrite
 uv run pdealchemy price path/to/config.toml
 ```
 
@@ -171,11 +171,11 @@ PDEAlchemy also supports notebook-first specification authoring with semantic ce
 
 Convert a specification notebook into TOML:
 ```bash
-uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/spec_black_scholes.toml --overwrite
+uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/black_scholes_blueprint.toml --overwrite
 ```
 Bridge spec TOML to executable runtime TOML:
 ```bash
-uv run pdealchemy spec-to-runtime-toml examples/notebooks/spec_black_scholes.toml --output examples/notebooks/spec_black_scholes.runtime.toml --overwrite
+uv run pdealchemy spec-to-runtime-toml examples/notebooks/black_scholes_blueprint.toml --output examples/notebooks/black_scholes_pricing.toml --overwrite
 ```
 
 Or use just recipes:
diff --git a/docs/black_scholes_first_workflow.md b/docs/black_scholes_first_workflow.md
index 5ce264f..940383d 100644
--- a/docs/black_scholes_first_workflow.md
+++ b/docs/black_scholes_first_workflow.md
@@ -38,12 +38,12 @@ This catches:
 ## 4) Notebook-driven spec and runtime bridge baseline
 Validate the notebook-to-TOML path, then bridge to executable runtime TOML.
 
-- `uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/spec_black_scholes.toml --overwrite`
-- `uv run pdealchemy spec-to-runtime-toml examples/notebooks/spec_black_scholes.toml --output examples/notebooks/spec_black_scholes.runtime.toml --overwrite`
-- `uv run pdealchemy validate examples/notebooks/spec_black_scholes.runtime.toml --equation-library library`
-- `uv run pdealchemy validate examples/notebooks/spec_black_scholes.runtime.toml --analytical --tolerance 0.75`
-- `uv run pdealchemy price examples/notebooks/spec_black_scholes.runtime.toml`
-- `uv run pdealchemy explain examples/notebooks/spec_black_scholes.runtime.toml --format markdown`
+- `uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/black_scholes_blueprint.toml --overwrite`
+- `uv run pdealchemy spec-to-runtime-toml examples/notebooks/black_scholes_blueprint.toml --output examples/notebooks/black_scholes_pricing.toml --overwrite`
+- `uv run pdealchemy validate examples/notebooks/black_scholes_pricing.toml --equation-library library`
+- `uv run pdealchemy validate examples/notebooks/black_scholes_pricing.toml --analytical --tolerance 0.75`
+- `uv run pdealchemy price examples/notebooks/black_scholes_pricing.toml`
+- `uv run pdealchemy explain examples/notebooks/black_scholes_pricing.toml --format markdown`
 
 ## 5) Optional one-command baseline run
 - `just bs-e2e`
diff --git a/docs/output_specification.md b/docs/output_specification.md
index e3ea565..1823dd3 100644
--- a/docs/output_specification.md
+++ b/docs/output_specification.md
@@ -4,14 +4,14 @@ This document defines expected output artefacts, content, and format options for
 ## Scope
 The current specification focuses on the canonical Black-Scholes baseline path:
 - source notebook: `examples/notebooks/spec_black_scholes.py`
-- spec TOML: generated via `notebook-to-toml`
-- runtime TOML: generated via `spec-to-runtime-toml`
+- blueprint TOML: generated via `notebook-to-toml`
+- pricing TOML: generated via `spec-to-runtime-toml`
 
 ## Core artefacts
 Each run should produce, or be able to produce, the following artefacts.
 
 ### 1) Specification artefact
-- **Artefact**: spec TOML
+- **Artefact**: blueprint TOML
 - **Purpose**: semantic representation of the notebook specification
 - **Minimum content**:
   - metadata title
@@ -22,7 +22,7 @@ Each run should produce, or be able to produce, the following artefacts.
   - rate/volatility references
 
 ### 2) Runtime artefact
-- **Artefact**: runtime pricing TOML
+- **Artefact**: pricing TOML
 - **Purpose**: executable schema-conformant config for `validate`, `price`, and `explain`
 - **Minimum content**:
   - `[process]` with state variables, parameters, drift, diffusion
@@ -101,10 +101,10 @@ Recommended output formats:
 
 ## Baseline command chain
 ```bash
-uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/spec_black_scholes.toml --overwrite
-uv run pdealchemy spec-to-runtime-toml examples/notebooks/spec_black_scholes.toml --output examples/notebooks/spec_black_scholes.runtime.toml --overwrite
-uv run pdealchemy validate examples/notebooks/spec_black_scholes.runtime.toml --equation-library library
-uv run pdealchemy validate examples/notebooks/spec_black_scholes.runtime.toml --analytical --tolerance 0.75
-uv run pdealchemy price examples/notebooks/spec_black_scholes.runtime.toml
-uv run pdealchemy explain examples/notebooks/spec_black_scholes.runtime.toml --format markdown
+uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/black_scholes_blueprint.toml --overwrite
+uv run pdealchemy spec-to-runtime-toml examples/notebooks/black_scholes_blueprint.toml --output examples/notebooks/black_scholes_pricing.toml --overwrite
+uv run pdealchemy validate examples/notebooks/black_scholes_pricing.toml --equation-library library
+uv run pdealchemy validate examples/notebooks/black_scholes_pricing.toml --analytical --tolerance 0.75
+uv run pdealchemy price examples/notebooks/black_scholes_pricing.toml
+uv run pdealchemy explain examples/notebooks/black_scholes_pricing.toml --format markdown
 ```
diff --git a/docs/validation_strategy.md b/docs/validation_strategy.md
index e6da1f5..2a7387d 100644
--- a/docs/validation_strategy.md
+++ b/docs/validation_strategy.md
@@ -63,8 +63,8 @@ Start from the simplest deterministic baseline and add complexity incrementally.
 - `uv run pdealchemy validate examples/vanilla_european_call.toml --equation-library library`
 
 4. Notebook-to-TOML baseline check
-- `uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/spec_black_scholes.toml --overwrite`
-- `uv run pdealchemy validate examples/notebooks/spec_black_scholes.toml`
+- `uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/black_scholes_blueprint.toml --overwrite`
+- `uv run pdealchemy validate examples/notebooks/black_scholes_blueprint.toml`
 
 5. Only then move to richer routes
 - market curve/surface example (`examples/vanilla_market_curve_surface.toml`)
diff --git a/examples/notebooks/black_scholes_results.py b/examples/notebooks/black_scholes_results.py
index c39ab4f..355d80a 100644
--- a/examples/notebooks/black_scholes_results.py
+++ b/examples/notebooks/black_scholes_results.py
@@ -38,7 +38,7 @@ def _():
 def _(create_notebook_report_controls, mo, render_notebook_report_controls):
     controls = create_notebook_report_controls(
         mo,
-        runtime_toml_default="examples/notebooks/spec_black_scholes.runtime.toml",
+        runtime_toml_default="examples/notebooks/black_scholes_pricing.toml",
         equation_library_default="library",
     )
     render_notebook_report_controls(
diff --git a/examples/notebooks/spec_black_scholes_with_results.py b/examples/notebooks/spec_black_scholes_with_results.py
index b15dc85..21eb781 100644
--- a/examples/notebooks/spec_black_scholes_with_results.py
+++ b/examples/notebooks/spec_black_scholes_with_results.py
@@ -148,7 +148,7 @@ def output_controls(
 ):
     controls = create_notebook_report_controls(
         mo,
-        runtime_toml_default="examples/notebooks/spec_black_scholes.runtime.toml",
+        runtime_toml_default="examples/notebooks/black_scholes_pricing.toml",
         equation_library_default="library",
     )
     render_notebook_report_controls(
diff --git a/justfile b/justfile
index 4143dfb..5889ae3 100644
--- a/justfile
+++ b/justfile
@@ -41,12 +41,12 @@ notebook-run file="examples/notebooks/price_explorer.py":
 
 notebook-check file="examples/notebooks/price_explorer.py":
     uv run marimo check {{file}}
-notebook-to-toml notebook="examples/notebooks/spec_black_scholes.py" output="examples/notebooks/spec_black_scholes.toml":
+notebook-to-toml notebook="examples/notebooks/spec_black_scholes.py" output="examples/notebooks/black_scholes_blueprint.toml":
     uv run pdealchemy notebook-to-toml {{notebook}} --output {{output}} --overwrite
-spec-to-runtime-toml spec="examples/notebooks/spec_black_scholes.toml" output="examples/notebooks/spec_black_scholes.runtime.toml":
+spec-to-runtime-toml spec="examples/notebooks/black_scholes_blueprint.toml" output="examples/notebooks/black_scholes_pricing.toml":
     uv run pdealchemy spec-to-runtime-toml {{spec}} --output {{output}} --overwrite
 
-bs-e2e notebook="examples/notebooks/spec_black_scholes.py" spec_output="examples/notebooks/spec_black_scholes.toml" runtime_output="examples/notebooks/spec_black_scholes.runtime.toml" explain_format="markdown":
+bs-e2e notebook="examples/notebooks/spec_black_scholes.py" spec_output="examples/notebooks/black_scholes_blueprint.toml" runtime_output="examples/notebooks/black_scholes_pricing.toml" explain_format="markdown":
     uv run pdealchemy notebook-to-toml {{notebook}} --output {{spec_output}} --overwrite
     uv run pdealchemy spec-to-runtime-toml {{spec_output}} --output {{runtime_output}} --overwrite
     uv run pdealchemy validate {{runtime_output}} --equation-library library
diff --git a/src/pdealchemy/cli/app.py b/src/pdealchemy/cli/app.py
index f0bf63f..f415f86 100644
--- a/src/pdealchemy/cli/app.py
+++ b/src/pdealchemy/cli/app.py
@@ -114,7 +114,7 @@ def spec_to_runtime_toml(
         None,
         "--output",
         "-o",
-        help="Output runtime TOML path. Defaults to <spec>.runtime.toml.",
+        help="Output pricing TOML path. Defaults to <spec>.pricing.toml.",
     ),
     overwrite: bool = typer.Option(
         False,
diff --git a/src/pdealchemy/notebook_reporting.py b/src/pdealchemy/notebook_reporting.py
index 862aea0..dfbe055 100644
--- a/src/pdealchemy/notebook_reporting.py
+++ b/src/pdealchemy/notebook_reporting.py
@@ -114,7 +114,7 @@ class NotebookReportResult:
 def create_notebook_report_controls(
     mo: MarimoProtocol,
     *,
-    runtime_toml_default: str = "examples/notebooks/spec_black_scholes.runtime.toml",
+    runtime_toml_default: str = "examples/notebooks/black_scholes_pricing.toml",
     equation_library_default: str = "library",
     include_convergence_default: bool = False,
 ) -> NotebookReportControls:
diff --git a/src/pdealchemy/spec_bridge.py b/src/pdealchemy/spec_bridge.py
index 5373abb..b1b8c7d 100644
--- a/src/pdealchemy/spec_bridge.py
+++ b/src/pdealchemy/spec_bridge.py
@@ -301,11 +301,12 @@ def spec_to_runtime_toml_file(
 ) -> Path:
     """Write runtime TOML bridged from spec TOML and return the output path."""
     rendered = spec_to_runtime_toml_content(spec_toml_path, defaults=defaults)
-    target_path = (
-        output_path
-        if output_path is not None
-        else spec_toml_path.with_name(f"{spec_toml_path.stem}.runtime.toml")
-    )
+    default_output_path = spec_toml_path.with_name(f"{spec_toml_path.stem}.pricing.toml")
+    if spec_toml_path.stem.endswith("_blueprint"):
+        default_output_path = spec_toml_path.with_name(
+            f"{spec_toml_path.stem.removesuffix('_blueprint')}_pricing.toml"
+        )
+    target_path = output_path if output_path is not None else default_output_path
     if target_path.exists() and not overwrite:
         raise ConfigError(
             f"Output file already exists: {target_path}",
diff --git a/templates/spec_template_examples.md b/templates/spec_template_examples.md
index dee0368..582197e 100644
--- a/templates/spec_template_examples.md
+++ b/templates/spec_template_examples.md
@@ -3,7 +3,7 @@
 
 ## Generate TOML from a specification notebook
 ```bash
-uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/spec_black_scholes.toml --overwrite
+uv run pdealchemy notebook-to-toml examples/notebooks/spec_black_scholes.py --output examples/notebooks/black_scholes_blueprint.toml --overwrite
 ```
 
 ## Equation library file examples
diff --git a/tests/notebook/test_notebook_reporting.py b/tests/notebook/test_notebook_reporting.py
index a003324..b68d42e 100644
--- a/tests/notebook/test_notebook_reporting.py
+++ b/tests/notebook/test_notebook_reporting.py
@@ -44,7 +44,7 @@ def vstack(self, blocks: list[object]):
 
 def _selection(**overrides):
     defaults = {
-        "runtime_toml_path": "examples/notebooks/spec_black_scholes.runtime.toml",
+        "runtime_toml_path": "examples/notebooks/black_scholes_pricing.toml",
         "equation_library_path": "library",
         "compare_backends": True,
         "include_pricing": True,
diff --git a/tests/notebook/test_spec_bridge.py b/tests/notebook/test_spec_bridge.py
index c6bfbd0..47d4ce4 100644
--- a/tests/notebook/test_spec_bridge.py
+++ b/tests/notebook/test_spec_bridge.py
@@ -58,13 +58,22 @@ def test_spec_to_runtime_toml_content_renders_runtime_shape(tmp_path: Path) -> N
     assert "[numerics.grid]" in rendered
 
 
-def test_spec_to_runtime_toml_file_writes_default_runtime_suffix(tmp_path: Path) -> None:
+def test_spec_to_runtime_toml_file_writes_default_pricing_suffix(tmp_path: Path) -> None:
     spec_path = tmp_path / "spec_black_scholes.toml"
     _write_spec_toml(spec_path)
 
+    output_path = spec_to_runtime_toml_file(spec_path, overwrite=True)
+    assert output_path == tmp_path / "spec_black_scholes.pricing.toml"
+    assert output_path.exists()
+
+
+def test_spec_to_runtime_toml_file_rewrites_blueprint_suffix(tmp_path: Path) -> None:
+    spec_path = tmp_path / "black_scholes_blueprint.toml"
+    _write_spec_toml(spec_path)
+
     output_path = spec_to_runtime_toml_file(spec_path, overwrite=True)
 
-    assert output_path == tmp_path / "spec_black_scholes.runtime.toml"
+    assert output_path == tmp_path / "black_scholes_pricing.toml"
     assert output_path.exists()