reasoning benchmark
BrowseComp Long Context 128k is a benchmark for evaluating web browsing agents on 1,266 questions involving persistent internet navigation and hard-to-locate, entangled information.
Updated Sep 5, 2026
Higher score ranks better on this benchmark.
Rank | Model | Score | Percentile | Participants | Evidence | Evaluated |
|---|
| Rank01 | ModelOP | Score92.00% | Percentile100.00% | Participants5 | EvidenceC | Evaluated |
| Rank02 | ModelOP | Score90.00% | Percentile75.00% | Participants5 | EvidenceC | Evaluated |
| Rank03 | ModelOP | Score90.00% | Percentile50.00% | Participants5 | EvidenceC | Evaluated |
| Rank04 | ModelOP | Score90.00% | Percentile25.00% | Participants5 | EvidenceC | Evaluated |
| Rank05 | ModelOP | Score90.00% | Percentile0.00% | Participants5 | EvidenceC | Evaluated |
The leading models and scores on this benchmark.
A closer view of the leading scores on this benchmark.
The first five results on this benchmark, with official price and output speed added where the model identity can be matched.
What BrowseComp Long Context 128k measures and how its scores work.
BrowseComp Long Context 128k is a reasoning benchmark comprising 1,266 questions with short, easily verifiable answers.
It measures web browsing agents' ability to persistently navigate the internet, use strategic reasoning and creative search, and interpret retrieved content, reported as a Score ratio.
Scores are shown in ratio. This benchmark is not independently verified and has an evidence level of B.
LLM Stats. Benchmark scores retain their original unit. Overall score eligibility is shown separately.
Common questions about BrowseComp Long Context 128k.
GPT-5.2 is currently ranked first with 92.00%.
The current leaders are GPT-5.2 (92.00%), GPT-5.1 (90.00%), and GPT-5.1 Instant (90.00%).
GPT-5.1 has the lowest matched official input price at $1.3 input / $10 output per 1M tokens.
The fastest matched records are GPT-5.2 (100.00 tok/s via OpenAI), GPT-5.1 (100.00 tok/s via OpenAI), and GPT-5.1 Instant (100.00 tok/s via OpenAI).
No. This benchmark measures one defined capability or task. The overall LLMBoard score uses a separate aggregation across eligible benchmark evidence.
It measures web browsing agents' ability to persistently navigate the internet, use strategic reasoning and creative search, and interpret retrieved content, reported as a Score ratio.
Yes. Higher values rank better for this benchmark.
5 model results are currently shown.
No. This benchmark is shown for reference but does not contribute to the overall score.
Ranking basisThis browsecomp long context 128k AI model leaderboard uses descending score in the benchmark original unit. The leaderboard ranking keeps matched price and speed data separate from benchmark evidence.
Selection summary
GPT-5.2 currently leads BrowseComp Long Context 128k with 92.00%. It is the top model on this specific benchmark, while the best LLM for the broader task should also be checked against other benchmarks, price, and runtime.
Use this leaderboard with the supporting benchmark results and coverage details above. A leaderboard position summarizes the selected ranking signal; it does not replace workload-specific testing.