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Ifeval (Arcee AI)

IFEval single-turn chat environment using RLVR-IFeval with JSON constraint rewards. Heavily inspired by and incorporates a lot of Allen AI's RLVR c...

Type
RL Env
Publisher
Arcee AI
Tags
IfevalConstraintsNone Reasoning
Runtime
single-turn
License
unknown
Size
v0.1.1
Published
Aug 2025
Updated
Apr 2026
Canonical
app.primeintellect.ai/dashboard/environments/arcee-ai/ifeval

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Evals this tool implements

2

Same problem set, this tool's harness. Run it to score a model on the test.

IFEval

Google DeepMind

500 prompts with verifiable instruction-following constraints (word counts, casing, JSON format) checked by deterministic rules - no LLM judge needed.

ActiveInstruction Following

IFEval: Instruction-Following Evaluation

Google (Alphabet Inc.)

Evaluates how well language models can strictly follow detailed instructions, such as writing responses with specific word counts or including required keywords.

ActiveReasoning