Model

CodeGen 16B (Mono)

OPEN

Salesforce · CodeGen family · released Mar 25, 2022

Early open program-synthesis LLM (350M-16B) trained on TPU-v4; Mono variant was competitive with OpenAI Codex on HumanEval

ReasoningCodingVisionFunction callingTool useAgentic

25.1

Elo · unrated

Parameters

16.1B

Active params

16.1B (dense)

Context

2K tokens

Architecture

Dense autoregressive transformer (GPT-2-style), 16.1B params, trained on TPU-v4

License

BSD-3-Clause

Languages

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API price (in/out)

No hosted API

Modalities

text

Benchmark results

Bar shows position within the tracked field; marker = field best

HumanEvalCoding29.3%#158

best: Claude Opus 4.5 · 99.4%

MBPPCoding35.3%#90

best: Llama-3.3-Nemotron-Super-49B v1 (Reasoning On) · 91.3%

Run it locally

VRAM @ Q4

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VRAM @ FP16

32.2 GB

Fits on (Q4)

Multi-node cluster required

Throughput data unavailable.

Quantizations

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CodeGen family

Elo progression across releases

Resources

API price weights · each benchmark row carries its own source badge (see methodology)