Auto71%Harbor: pendingAgentic / Tool UseMultimodal

Savanna

Agentic Image Generation in the Wild

A benchmark of 500 prompts across 16 subcategories evaluating agentic image generation on recent entities with temporal novelty, semantic crowding, and spatial entanglement.

How to run

ltb · savanna
$ npm i -g lettokenburn-cli
$ ltb bench info savanna

External harness. No Harbor adapter has been generated for this benchmark yet. `ltb bench info` prints the known links.

Runs happen on your machine with your own subscription; only the score summary is pushed. CLI docs

Scores

12 sourced entries
HarnessSourceConfidenceLink
Ranger58.9ranger qwen3-vl-8bIndependentmediumOct 16, 2026arxiv.org
Gen-Searcher37.9gen-searcher qwen3-vl-8bIndependentmediumOct 16, 2026arxiv.org
SCOPE37.3scope ∗ gpt-6-astraIndependentmediumOct 16, 2026arxiv.org
GenClaw36.5genclaw ∗ claude-opus-5IndependentmediumOct 16, 2026arxiv.org
Nano Banana 234.9N/AIndependentmediumOct 16, 2026arxiv.org
GenClaw34.2genclaw claude-opus-4.6IndependentmediumOct 16, 2026arxiv.org
GenEvolve34.2genevolve qwen3-vl-8bIndependentmediumOct 16, 2026arxiv.org
SCOPE30.2scope gpt-5.4IndependentmediumOct 16, 2026arxiv.org
Mind-Brush29.5mind-brush gpt-5.1IndependentmediumOct 16, 2026arxiv.org
GPT-Image-226.4N/AIndependentmediumOct 16, 2026arxiv.org
Nano Banana Pro26.1N/AIndependentmediumOct 16, 2026arxiv.org
Unify-Agent BAGEL-14B22.5N/AIndependentmediumOct 16, 2026arxiv.org

Every number links to where it was published. Low-confidence rows are muted and need per-cell verification.

Reproduced by the community

All runs
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About

Savanna contains 500 natural-language prompts synthesized from recent news headlines, filtered for high retrieval confusion. It targets challenges like temporal novelty and semantic crowding in web-based reference retrieval.

Scoring uses separate search and generation scores to measure reference correctness and image fidelity. Frontier models achieve low search scores (~51.5%), indicating the benchmark remains unsaturated and difficult for current agents.