# Drex 2.0 model sizes and sources

> Drex 2.0 is Nace.AI's decision model with 35B parameters and about 3B active. Its hosted price is $0.06 per million input tokens.

Updated 2026-11-04 (Australia/Adelaide)

By Nace.AI · Released: 2026-10-06 · OPEN

[Drex 2.0](<https://decisionmodels.ai/models/drex>) returns probabilities over typed answers for text, with open weights under Nace.AI's Open RAIL licence. [Drex Max](<https://decisionmodels.ai/models/drex>) (13 Oct) adds images and screenshots; its 27B weights are now public under Nace.AI Open RAIL-M. [Drex Max Finance](<https://decisionmodels.ai/models/drex>) followed on 01 Nov 2026 as a hosted model. The entry's date is [Drex 2.0](<https://decisionmodels.ai/models/drex>)'s release in Nace.AI's model table.

## Facts

- Size: [Drex 2.0](<https://decisionmodels.ai/models/drex>): 35B, about 3B active; [Drex Max](<https://decisionmodels.ai/models/drex>): dense 27B
- Price: $0.06 per million input tokens for [Drex 2.0](<https://decisionmodels.ai/models/drex>); $0.03 for [Drex Max](<https://decisionmodels.ai/models/drex>), Max v1.1 and Max Finance, hosted · [Compare prices](<https://decisionmodels.ai/pricing>)
- Context: [Drex 2.0](<https://decisionmodels.ai/models/drex>) state up to 131,072 tokens; Max Finance whole request up to 262,144 tokens
- Licence: [Drex Max](<https://decisionmodels.ai/models/drex>) weights: Nace.AI Open RAIL-M
- Access: [Drex Max](<https://decisionmodels.ai/models/drex>) supports text and images through Python on NVIDIA GPUs. CPU and Apple Silicon runtimes support text only. Max Finance API id: drex-max-finance.

## Claims and sources

- **VENDOR-REPORTED**: Nace.AI reports 85.7% accuracy across 3,361 decisions on 48 held-out finance benchmarks for [Drex Max Finance](<https://decisionmodels.ai/models/drex>), with a Finance Index of 77.3. These are its own 02 Nov 2026 launch figures. [source](<https://x.com/NaceAI/status/2117298824926703953>)

## Links

- [Source: Model table](<https://console.nace.ai/docs/drex/reference/models>)
- [Source: Hugging Face](<https://huggingface.co/nace-ai/drex-v2.0>)
- [Source: Drex Max weights and local inference](<https://huggingface.co/nace-ai/drex-max-v1>)
- [Source: Drex Max Finance API guide](<https://console.nace.ai/docs/drex/guides/drex-max#drex-max-finance>)

## Related projects

### Drex inside DuckDB and other SQL systems

[Drex inside DuckDB and other SQL systems](<https://decisionmodels.ai/projects#project-drex-duckdb>)

[Source: nace-ai/drex-duckdb](<https://github.com/nace-ai/drex-duckdb>)

Nace's DuckDB extension asks typed questions about rows from SQL and returns probabilities as column values, for routing support tickets, classifying documents or scoring data you already query. Nace also publishes MIT-licensed connectors for Snowflake, PostgreSQL, ClickHouse and Apache Spark, including Databricks SQL. Text and JSON calls default to drex-v2.0; images need an image-capable model such as drex-max.

- Creator: Nace AI

- Stars: 0

- Licence: MIT

- Model: [Drex 2.0](<https://decisionmodels.ai/models/drex>), [Drex Max](<https://decisionmodels.ai/models/drex>)

- Tags: sql, database

- [Source: Snowflake](<https://github.com/nace-ai/drex-snowflake>)
- [Source: PostgreSQL](<https://github.com/nace-ai/drex-postgres>)
- [Source: ClickHouse](<https://github.com/nace-ai/drex-clickhouse>)
- [Source: Apache Spark and Databricks SQL](<https://github.com/nace-ai/drex-spark>)

### inspect-drex: score agent outputs against a rubric

[inspect-drex: score agent outputs against a rubric](<https://decisionmodels.ai/projects#project-inspect-drex>)

[Source: nace-ai/inspect-drex](<https://github.com/nace-ai/inspect-drex>)

A scorer for the UK AI Security Institute's Inspect framework that asks [Drex](<https://decisionmodels.ai/models/drex>) whether an output meets your criteria and keeps the probabilities, so you can change pass thresholds after the run. It defaults to drex-max, whose target changes with flagship releases; pin a model for repeatable runs. [Drex Max](<https://decisionmodels.ai/models/drex>) accepts images, while drex-v2.0 accepts text and JSON.

- Creator: nace-ai

- Stars: 0

- Licence: MIT

- Model: [Drex 2.0](<https://decisionmodels.ai/models/drex>), [Drex Max](<https://decisionmodels.ai/models/drex>)

- Tags: evaluation, agent