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LLM Stats
BIG-Bench Hard
BIG-Bench Hard (BBH) is a subset of 23 challenging BIG-Bench tasks selected because prior language model evaluations did not outperform average human-rater performance. The benchmark contains 6,511 evaluation examples testing various forms of multi-step reasoning including arithmetic, logical reasoning (Boolean expressions, logical deduction), geometric reasoning, temporal reasoning, and language understanding. Tasks require capabilities such as causal judgment, object counting, navigation, pattern recognition, and complex problem solving.
Evaluation context and evidence
- Source
- LLM Stats
- Publisher
- Not recorded
- Benchmark release
- Not recorded
- Collected
- 2026-08-17
- Modality
- text
These are source-reported observations, not independent reruns by this site. Check the task version, evaluation protocol, unit and reporting date before comparing models. Results from different setups are not a universal ranking.
Original sources
Reported results 21
Shown in source observation order, not ranked. Dates retain the precision provided by the source.
| Model | Value | Unit | Protocol | Reported date and basis | Source |
|---|---|---|---|---|---|
| Claude 3.5 Sonnet | 0.931 | Not recorded | Not recorded | 2024-10-22 · model_announcement | LLM Stats |
| Claude 3.5 Sonnet | 0.931 | Not recorded | Not recorded | 2024-06-21 · model_announcement | LLM Stats |
| Gemini 1.5 Pro | 0.892 | Not recorded | Not recorded | 2024-05-01 · model_announcement | LLM Stats |
| Gemma 3 27B | 0.876 | Not recorded | Not recorded | 2025-03-12 · model_announcement | LLM Stats |
| Claude 3 Opus | 0.868 | Not recorded | Not recorded | 2024-02-29 · model_announcement | LLM Stats |
| Gemma 3 12B | 0.857 | Not recorded | Not recorded | 2025-03-12 · model_announcement | LLM Stats |
| Gemini 1.5 Flash | 0.855 | Not recorded | Not recorded | 2024-05-01 · model_announcement | LLM Stats |
| Claude 3 Sonnet | 0.829 | Not recorded | Not recorded | 2024-02-29 · model_announcement | LLM Stats |
| Phi-3.5-MoE-instruct | 0.791 | Not recorded | Not recorded | 2024-08-23 · model_announcement | LLM Stats |
| Claude 3 Haiku | 0.737 | Not recorded | Not recorded | 2024-03-13 · model_announcement | LLM Stats |
| Gemma 3 4B | 0.722 | Not recorded | Not recorded | 2025-03-12 · model_announcement | LLM Stats |
| Phi 4 Mini | 0.704 | Not recorded | Not recorded | 2025-02-01 · model_announcement | LLM Stats |
| Granite 3.3 8B Base | 0.6913 | Not recorded | Not recorded | 2025-04-16 · model_announcement | LLM Stats |
| Granite 3.3 8B Instruct | 0.6913 | Not recorded | Not recorded | 2025-04-16 · model_announcement | LLM Stats |
| Phi-3.5-mini-instruct | 0.69 | Not recorded | Not recorded | 2024-08-23 · model_announcement | LLM Stats |
| IBM Granite 4.0 Tiny Preview | 0.557 | Not recorded | Not recorded | 2025-05-02 · model_announcement | LLM Stats |
| Gemma 3n E4B | 0.529 | Not recorded | Not recorded | 2025-06-26 · model_announcement | LLM Stats |
| Gemma 3n E4B Instructed LiteRT Preview | 0.529 | Not recorded | Not recorded | 2025-05-20 · model_announcement | LLM Stats |
| Gemma 3n E2B | 0.443 | Not recorded | Not recorded | 2025-06-26 · model_announcement | LLM Stats |
| Gemma 3n E2B Instructed LiteRT (Preview) | 0.443 | Not recorded | Not recorded | 2025-05-20 · model_announcement | LLM Stats |
| Gemma 3 1B | 0.391 | Not recorded | Not recorded | 2025-03-12 · model_announcement | LLM Stats |