AI Index / Open-source log management tools / History

Open-source log management tools — AI Recommendation History

What AI assistants recommended for open-source log management tools, date by date. Every ranking we publish is frozen the day it publishes, so this is a record of what was said — not a re-computation of what today's data would say about the past.

Record: 26 dated snapshots · Aug 14, 2026 – Sep 8, 2026

Answer archive Methodology Data studies JSON

What changed

Computed by comparing each dated snapshot with the one before it. Share moves smaller than 1pp are treated as noise and left out — the same threshold that suppresses trend arrows on the ranking.

Sep 8, 2026vs Sep 7, 2026

No change above the noise floor.

Sep 7, 2026vs Sep 6, 2026

▲OpenObserve moved #6 → #5
▼OpenSearch moved #5 → #6
▲Prometheus moved #9 → #8
▼SigNoz moved #8 → #9
▼Graylog -4pp (78.6% → 74.6%)
▲Prometheus +4pp (50% → 54%)
▼Loki -3.8pp (91.1% → 87.3%)
▼OpenSearch -3.6pp (60.7% → 57.1%)
▼SigNoz -2.6pp (51.8% → 49.2%)
▼OpenObserve -1.8pp (58.9% → 57.1%)
▼Kubernetes -1.6pp (71.4% → 69.8%)
▼Elasticsearch -1.4pp (55.4% → 54%)

Sep 6, 2026vs Sep 5, 2026

Methodology change: extraction rules 5-7 → 7 between these dates. Differences below may reflect the rule change rather than a change in what AI recommends — see the methodology changelog.

▼Prometheus moved #6 → #9
▲Graylog moved #5 → #3
▼Kubernetes moved #3 → #4
▼OpenSearch moved #4 → #5
▲OpenObserve moved #7 → #6
▲Elasticsearch moved #8 → #7
▲SigNoz moved #9 → #8
▲Graylog +11.9pp (66.7% → 78.6%)
▼Prometheus -9.5pp (59.5% → 50%)
▼OpenSearch -6pp (66.7% → 60.7%)
▲Loki +5.4pp (85.7% → 91.1%)
▲Kubernetes +4.7pp (66.7% → 71.4%)
▲Grafana +4.2pp (83.3% → 87.5%)
▲OpenObserve +4.1pp (54.8% → 58.9%)
▲Grafana Loki +3.5pp (42.9% → 46.4%)
▲SigNoz +1.8pp (50% → 51.8%)

Sep 5, 2026vs Sep 4, 2026

Methodology change: extraction rules 4-7 → 5-7 between these dates. Differences below may reflect the rule change rather than a change in what AI recommends — see the methodology changelog.

▲Kubernetes moved #5 → #3
▼OpenSearch moved #3 → #4
▼Graylog moved #4 → #5
▲OpenObserve moved #8 → #7
▼Elasticsearch moved #7 → #8
▼Grafana Loki -6.1pp (49% → 42.9%)
▼Elasticsearch -4.4pp (59.2% → 54.8%)
▲Kubernetes +3.4pp (63.3% → 66.7%)
▼OpenSearch -2.7pp (69.4% → 66.7%)
▼Graylog -2.7pp (69.4% → 66.7%)
▼Loki -2.1pp (87.8% → 85.7%)
▼Prometheus -1.7pp (61.2% → 59.5%)
▲OpenObserve +1.7pp (53.1% → 54.8%)
▲SigNoz +1pp (49% → 50%)

Sep 4, 2026vs Sep 3, 2026

▲Prometheus moved #9 → #6
▲OpenSearch moved #5 → #3
▼Grafana Loki moved #8 → #10
▼Graylog moved #3 → #4
▼Kubernetes moved #4 → #5
▼Elasticsearch moved #6 → #7
▼OpenObserve moved #7 → #8
▲SigNoz moved #10 → #9
▼Grafana Loki -8.1pp (57.1% → 49%)
▲OpenSearch +5.9pp (63.5% → 69.4%)
▲Prometheus +5.6pp (55.6% → 61.2%)
▼OpenObserve -5.6pp (58.7% → 53.1%)
▼SigNoz -5pp (54% → 49%)
▼Grafana -3.6pp (87.3% → 83.7%)
▼Graylog -3.6pp (73% → 69.4%)
▼Kubernetes -3.4pp (66.7% → 63.3%)
▼Loki -2.7pp (90.5% → 87.8%)

Sep 3, 2026vs Sep 2, 2026

No change above the noise floor.

Sep 2, 2026vs Sep 1, 2026

No change above the noise floor.

Sep 1, 2026vs Aug 31, 2026

No change above the noise floor.

Aug 31, 2026vs Aug 30, 2026

No change above the noise floor.

Aug 30, 2026vs Aug 29, 2026

No change above the noise floor.

Aug 29, 2026vs Aug 28, 2026

No change above the noise floor.

Aug 28, 2026vs Aug 27, 2026

No change above the noise floor.

Aug 27, 2026vs Aug 26, 2026

▲ INGrafana Loki entered the top 10 (#11 → #8)
▼ OUTELK left the top 10 (#8 → #11)
▲Grafana Loki moved #11 → #8
▼ELK moved #8 → #11
▲Grafana moved #3 → #2
▼Graylog moved #2 → #3
▲Prometheus moved #10 → #9
▼SigNoz moved #9 → #10
▲Grafana +15.9pp (71.4% → 87.3%)
▼ELK -7.9pp (57.1% → 49.2%)
▲Grafana Loki +7.7pp (49.4% → 57.1%)
▼Graylog -3.6pp (76.6% → 73%)
▼SigNoz -3.1pp (57.1% → 54%)
▲Prometheus +2.4pp (53.2% → 55.6%)
▼Kubernetes -2.1pp (68.8% → 66.7%)
▼Loki -1.7pp (92.2% → 90.5%)
▲OpenSearch +1.2pp (62.3% → 63.5%)
▼Elasticsearch -1pp (59.7% → 58.7%)
▼OpenObserve -1pp (59.7% → 58.7%)

Aug 26, 2026vs Aug 25, 2026

No change above the noise floor.

Aug 25, 2026vs Aug 24, 2026

No change above the noise floor.

Aug 24, 2026vs Aug 23, 2026

No change above the noise floor.

Aug 23, 2026vs Aug 22, 2026

▲ INPrometheus entered the top 10 (#11 → #10)
▼ OUTGrafana Loki left the top 10 (#9 → #11)
▲Grafana moved #6 → #3
▼OpenObserve moved #4 → #7
▲Elasticsearch moved #8 → #6
▲ELK moved #10 → #8
▼SigNoz moved #7 → #9
▼Grafana Loki moved #9 → #11
▼Kubernetes moved #3 → #4
▲Prometheus moved #11 → #10
▲Grafana +14.3pp (57.1% → 71.4%)
▼Grafana Loki -6.7pp (56.1% → 49.4%)
▲Kubernetes +4.5pp (64.3% → 68.8%)
▲OpenSearch +4.1pp (58.2% → 62.3%)
▲Elasticsearch +3.6pp (56.1% → 59.7%)
▲Graylog +3.1pp (73.5% → 76.6%)
▲Prometheus +2.2pp (51% → 53.2%)
▲Loki +1.4pp (90.8% → 92.2%)
▲ELK +1pp (56.1% → 57.1%)

Aug 22, 2026vs Aug 21, 2026

No change above the noise floor.

Aug 21, 2026vs Aug 20, 2026

No change above the noise floor.

Aug 20, 2026vs Aug 19, 2026

No change above the noise floor.

Aug 19, 2026vs Aug 18, 2026

▲Grafana moved #9 → #6
▼ELK moved #7 → #10
▼SigNoz moved #5 → #7
▲OpenSearch moved #6 → #5
▲Grafana Loki moved #10 → #9
▼Graylog -2.3pp (75.8% → 73.5%)
▼OpenObserve -2.3pp (61.5% → 59.2%)
▼SigNoz -2.2pp (59.3% → 57.1%)
▼ELK -2.1pp (58.2% → 56.1%)
▼OpenSearch -1.1pp (59.3% → 58.2%)
▲Grafana +1.1pp (56% → 57.1%)
▼Elasticsearch -1pp (57.1% → 56.1%)

Aug 18, 2026vs Aug 17, 2026

Methodology change: extraction rules 4-5 → 4-7 between these dates. Differences below may reflect the rule change rather than a change in what AI recommends — see the methodology changelog.

▲ INGrafana entered the top 10 (#14 → #9)
▼ OUTPrometheus left the top 10 (#10 → #11)
▼Grafana Loki moved #4 → #10
▲Grafana moved #14 → #9
▲OpenObserve moved #8 → #4
▼ELK moved #3 → #7
▲OpenSearch moved #9 → #6
▲Kubernetes moved #5 → #3
▲SigNoz moved #6 → #5
▼Elasticsearch moved #7 → #8
▼Prometheus moved #10 → #11
▲Grafana +23.5pp (32.5% → 56%)
▼Grafana Loki -11.5pp (67.5% → 56%)
▼ELK -9.3pp (67.5% → 58.2%)
▲OpenSearch +6.1pp (53.2% → 59.3%)
▼Elasticsearch -5.2pp (62.3% → 57.1%)
▼SigNoz -4.3pp (63.6% → 59.3%)
▲Prometheus +2.7pp (46.8% → 49.5%)
▲Graylog +1.8pp (74% → 75.8%)
▼Loki -1pp (92.2% → 91.2%)

Aug 17, 2026vs Aug 16, 2026

No change above the noise floor.

Aug 16, 2026vs Aug 15, 2026

No change above the noise floor.

Aug 15, 2026vs Aug 14, 2026

No change above the noise floor.

The ranking, date by date

Top 10 on each archived date, exactly as published. Cite a date and it stays true: snapshots are append-only, and a correction appends a new revision rather than overwriting the original.

Sep 8, 202663 sampled answers · window 2026-08-11 – 2026-09-08 · rules v7

#1Loki87.3%
#2Grafana87.3%
#3Graylog74.6%
#4Kubernetes69.8%
#5OpenObserve57.1%
#6OpenSearch57.1%
#7Elasticsearch54%
#8Prometheus54%
#9SigNoz49.2%
#10Grafana Loki46%

Sep 7, 202663 sampled answers · window 2026-08-10 – 2026-09-07 · rules v7

#1Loki87.3%
#2Grafana87.3%
#3Graylog74.6%
#4Kubernetes69.8%
#5OpenObserve57.1%
#6OpenSearch57.1%
#7Elasticsearch54%
#8Prometheus54%
#9SigNoz49.2%
#10Grafana Loki46%

Sep 6, 202656 sampled answers · window 2026-08-09 – 2026-09-06 · rules v7

#1Loki91.1%
#2Grafana87.5%
#3Graylog78.6%
#4Kubernetes71.4%
#5OpenSearch60.7%
#6OpenObserve58.9%
#7Elasticsearch55.4%
#8SigNoz51.8%
#9Prometheus50%
#10Grafana Loki46.4%

Sep 5, 202642 sampled answers · window 2026-08-08 – 2026-09-05 · rules v5-7

#1Loki85.7%
#2Grafana83.3%
#3Kubernetes66.7%
#4OpenSearch66.7%
#5Graylog66.7%
#6Prometheus59.5%
#7OpenObserve54.8%
#8Elasticsearch54.8%
#9SigNoz50%
#10Grafana Loki42.9%

Sep 4, 202649 sampled answers · window 2026-08-07 – 2026-09-04 · rules v4-7

#1Loki87.8%
#2Grafana83.7%
#3OpenSearch69.4%
#4Graylog69.4%
#5Kubernetes63.3%
#6Prometheus61.2%
#7Elasticsearch59.2%
#8OpenObserve53.1%
#9SigNoz49%
#10Grafana Loki49%

Sep 3, 202663 sampled answers · window 2026-08-06 – 2026-09-03 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Sep 2, 202663 sampled answers · window 2026-08-05 – 2026-09-02 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Sep 1, 202663 sampled answers · window 2026-08-04 – 2026-09-01 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Aug 31, 202663 sampled answers · window 2026-08-03 – 2026-08-31 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Aug 30, 202663 sampled answers · window 2026-08-02 – 2026-08-30 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Aug 29, 202663 sampled answers · window 2026-08-01 – 2026-08-29 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Aug 28, 202663 sampled answers · window 2026-07-31 – 2026-08-28 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Aug 27, 202663 sampled answers · window 2026-07-30 – 2026-08-27 · rules v4-7

#1Loki90.5%
#2Grafana87.3%
#3Graylog73%
#4Kubernetes66.7%
#5OpenSearch63.5%
#6Elasticsearch58.7%
#7OpenObserve58.7%
#8Grafana Loki57.1%
#9Prometheus55.6%
#10SigNoz54%

Aug 26, 202677 sampled answers · window 2026-07-29 – 2026-08-26 · rules v4-7

#1Loki92.2%
#2Graylog76.6%
#3Grafana71.4%
#4Kubernetes68.8%
#5OpenSearch62.3%
#6Elasticsearch59.7%
#7OpenObserve59.7%
#8ELK57.1%
#9SigNoz57.1%
#10Prometheus53.2%

Aug 25, 202677 sampled answers · window 2026-07-28 – 2026-08-25 · rules v4-7

#1Loki92.2%
#2Graylog76.6%
#3Grafana71.4%
#4Kubernetes68.8%
#5OpenSearch62.3%
#6Elasticsearch59.7%
#7OpenObserve59.7%
#8ELK57.1%
#9SigNoz57.1%
#10Prometheus53.2%

Aug 24, 202677 sampled answers · window 2026-07-27 – 2026-08-24 · rules v4-7

#1Loki92.2%
#2Graylog76.6%
#3Grafana71.4%
#4Kubernetes68.8%
#5OpenSearch62.3%
#6Elasticsearch59.7%
#7OpenObserve59.7%
#8ELK57.1%
#9SigNoz57.1%
#10Prometheus53.2%

Aug 23, 202677 sampled answers · window 2026-07-26 – 2026-08-23 · rules v4-7

#1Loki92.2%
#2Graylog76.6%
#3Grafana71.4%
#4Kubernetes68.8%
#5OpenSearch62.3%
#6Elasticsearch59.7%
#7OpenObserve59.7%
#8ELK57.1%
#9SigNoz57.1%
#10Prometheus53.2%

Aug 22, 202698 sampled answers · window 2026-07-25 – 2026-08-22 · rules v4-7

#1Loki90.8%
#2Graylog73.5%
#3Kubernetes64.3%
#4OpenObserve59.2%
#5OpenSearch58.2%
#6Grafana57.1%
#7SigNoz57.1%
#8Elasticsearch56.1%
#9Grafana Loki56.1%
#10ELK56.1%

Aug 21, 202698 sampled answers · window 2026-07-24 – 2026-08-21 · rules v4-7

#1Loki90.8%
#2Graylog73.5%
#3Kubernetes64.3%
#4OpenObserve59.2%
#5OpenSearch58.2%
#6Grafana57.1%
#7SigNoz57.1%
#8Elasticsearch56.1%
#9Grafana Loki56.1%
#10ELK56.1%

Aug 20, 202698 sampled answers · window 2026-07-23 – 2026-08-20 · rules v4-7

#1Loki90.8%
#2Graylog73.5%
#3Kubernetes64.3%
#4OpenObserve59.2%
#5OpenSearch58.2%
#6Grafana57.1%
#7SigNoz57.1%
#8Elasticsearch56.1%
#9Grafana Loki56.1%
#10ELK56.1%

Aug 19, 202698 sampled answers · window 2026-07-22 – 2026-08-19 · rules v4-7

#1Loki90.8%
#2Graylog73.5%
#3Kubernetes64.3%
#4OpenObserve59.2%
#5OpenSearch58.2%
#6Grafana57.1%
#7SigNoz57.1%
#8Elasticsearch56.1%
#9Grafana Loki56.1%
#10ELK56.1%

Aug 18, 202691 sampled answers · window 2026-07-21 – 2026-08-18 · rules v4-7

#1Loki91.2%
#2Graylog75.8%
#3Kubernetes64.8%
#4OpenObserve61.5%
#5SigNoz59.3%
#6OpenSearch59.3%
#7ELK58.2%
#8Elasticsearch57.1%
#9Grafana56%
#10Grafana Loki56%

Aug 17, 202677 sampled answers · window 2026-07-20 – 2026-08-17 · rules v4-5

#1Loki92.2%
#2Graylog74%
#3ELK67.5%
#4Grafana Loki67.5%
#5Kubernetes64.9%
#6SigNoz63.6%
#7Elasticsearch62.3%
#8OpenObserve61%
#9OpenSearch53.2%
#10Prometheus46.8%

Aug 16, 202677 sampled answers · window 2026-07-19 – 2026-08-16 · rules v4-5

#1Loki92.2%
#2Graylog74%
#3ELK67.5%
#4Grafana Loki67.5%
#5Kubernetes64.9%
#6SigNoz63.6%
#7Elasticsearch62.3%
#8OpenObserve61%
#9OpenSearch53.2%
#10Prometheus46.8%

Aug 15, 202677 sampled answers · window 2026-07-18 – 2026-08-15 · rules v4-5

#1Loki92.2%
#2Graylog74%
#3ELK67.5%
#4Grafana Loki67.5%
#5Kubernetes64.9%
#6SigNoz63.6%
#7Elasticsearch62.3%
#8OpenObserve61%
#9OpenSearch53.2%
#10Prometheus46.8%

Aug 14, 202677 sampled answers · window 2026-07-17 – 2026-08-14 · rules v4-5

#1Loki92.2%
#2Graylog74%
#3ELK67.5%
#4Grafana Loki67.5%
#5Kubernetes64.9%
#6SigNoz63.6%
#7Elasticsearch62.3%
#8OpenObserve61%
#9OpenSearch53.2%
#10Prometheus46.8%

Read any date directly

Every archived date is machine-readable at /api/index/open-source-log-management/as-of/<YYYY-MM-DD>, which returns the ranking as it stood, with the extraction version and revision it was published under. Dates before the record begins return no_record rather than a recomputation — we do not reconstruct history on demand and present it as what we said. See what the engines actually said.

[ORBATOR]