Option recommendations (experimental; full mode; rules 2026-10-18)

Schema  JSON Schema (https://json-schema.org/draft/2020-12/schema)
  components                       0, 0 operations
  inline objects / enums           1 / 0, nesting depth 1
  shared property names            0 (none)
  inline names = component names   0
  repeated inline objects / enums  0 of 0 shapes / 0 of 0 value sets
  titled components                0: 0 shared titles (none), 0 equal another key, 0 equal their own key
  inline titles                    0 objects, most repeated 0 (none)
  unions                           0 oneOf/anyOf, 0 with a discriminator, 0 inline variants
  union branch tags                0 tagged, 0 single required key, 0 tagged only through allOf $ref, 0 copy their parent
  component keys                   none; 0 dotted in 0 namespaces
  constraint keywords              uniqueItems 0, patternProperties 0 (0 beyond a typed map), multipleOf 0, OpenAPI 3.0 nullable 0, boolean exclusive bounds 0
  formats                          0 (none), decimal 0; int32/int64 0, ranges not enforced
  integer/number/boolean schemas   0
  root schema                      object model 1, title words 1

Start from  --preset standard-py314-20261017

Add (1 option)
  --class-name NumericTitle   [root.class-name-for-root-object]
      The root schema is an object model. Without --class-name its class is Model (with
      --use-title-as-name, its title: 2024), and full-path prefixes that name onto root-level
      models. The suggested name comes from the input file name; replace it with the name the
      project wants.
      measured: SchemaStore tsconfig schema: JSONSchemaForTheTypeScriptCompilerSConfigurationFile
      became TsConfig, names over 40 characters 6 -> 0
      measured: SchemaStore workflow, docker-compose and package.json schemas: Model became
      Workflow, Compose and PackageJson

Trial  3 candidates generated in memory without formatting; nothing written
  candidate    classes  problems  numbered  long  doubled  displaced  median  unconstrained
  current      rejected: title='2024' is invalid class name.
  preset       rejected: title='2024' is invalid class name.
  recommended        2  0 (0.0%)         0     0        0          0      12              0   selected
  current: the configuration as set, without the preset; never selected
  unconstrained: fields that dcg warns it generates without some of their constraints

Command
  datamodel-codegen --class-name NumericTitle --input numeric_title.json --preset standard-py314-20261017 --target-python-version 3.14

pyproject.toml
  [tool.datamodel-codegen]
  class-name = "NumericTitle"
  input = "numeric_title.json"
  preset = "standard-py314-20261017"
  target-python-version = "3.14"
