Web Search Index
Answering questions that need live web search, with native and independent tools. Run by Vals AI.
As of 19 Sept 2026, Claude Fable 5 Exa leads Web Search Index on BenchLeader with 48.5%, ahead of Claude Fable 5 at 46.9%, across 8 model configurations with a published result.
- Published by
- Vals AI
- Category
- Agents & tools
- Index weight
- Reference only
- Models
- 8
- Data as of
- 19 Sept 2026
Vals AI (vals.ai).
What the test looks like
Questions whose answers require searching the web; models run with their native search and with an independent search tool.
How it is scored
Accuracy, run by Vals AI.
What to keep in mind
Results depend on the search backend and on the day the question was asked.
- 1Claude Fable 5 Exa48.5%
- 2Claude Fable 546.9%
- 3GPT 5.6 Sol Exa (max)45.2%
- 4GPT-5.6 Sol (max)43.6%
- 5Gemini 3.5 Flash Exa (high)41.4%
- 6Grok 4.5 Exa (high)38.8%
- 7Gemini 3.5 Flash (high)37.0%
- 8Grok 4.5 (high)35.5%
8 of 8
| # | ||||
|---|---|---|---|---|
| 1 |  Claude Fable 5 ExaAnthropic | 48.5% | – | 2026-07-16 |
| 2 | Claude Fable 5Anthropic | 46.9% | 68.3 | 2026-07-16 |
| 3 |  GPT 5.6 Sol ExamaxOpenAI | 45.2% | – | 2026-07-16 |
| 4 | GPT-5.6 SolmaxOpenAI | 43.6% | 68.8 | 2026-07-16 |
| 5 |  Gemini 3.5 Flash ExahighGoogle | 41.4% | – | 2026-07-16 |
| 6 |  Grok 4.5 ExahighxAI | 38.8% | – | 2026-07-16 |
| 7 | Gemini 3.5 FlashhighGoogle | 37.0% | 63.6 | 2026-07-16 |
| 8 | Grok 4.5highxAI | 35.5% | 61.0 | 2026-07-16 |
Cite as: BenchLeader, “Web Search Index leaderboard”, https://www.benchleader.com/benchmarks/vals_web_search, data as of 19 Sept 2026.
Web Search Index: questions
- What does Web Search Index measure?
- Questions whose answers require searching the web; models run with their native search and with an independent search tool. Scores are reported in percent of tasks solved; higher is better.
- Which AI model leads Web Search Index?
- Claude Fable 5 Exa leads Web Search Index with 48.5% as of 19 Sept 2026, ahead of Claude Fable 5 at 46.9%.
- How many models have Web Search Index results?
- 8 model configurations have a Web Search Index result on BenchLeader, all taken from Vals AI.
- Who runs Web Search Index and how often is it updated?
- Web Search Index is published by Vals AI. BenchLeader re-reads the published results every morning and records the date each result was published.
- Does Web Search Index count toward the BenchLeader Index?
- No. Web Search Index is shown for reference but left out of the composite index.