AI Chat Assistants · reliability comparison

Claude vs DeepSeek Chat: which is more reliable? (2026)

DeepSeek Chat is more reliable than Claude, scoring 77.4 vs 57.0 out of 100. Over the last 90 days Claude reported 39 incidents and DeepSeek Chat reported 20, with effective uptime of 99.25% and 100% respectively.

Data updated Nov 1, 2026 · How we score

Claude

57.0/100

Operational

Visit Claude ↗

DeepSeek Chat

77.4/100

Operational

Visit DeepSeek Chat ↗
VS
MetricClaudeDeepSeek Chat
Reliability score57.077.4
Rank (AI chat assistants)#5#4
Uptime (90 days)99.25%100%
Incidents (90 days)3920
Partial / major outages214
Avg time to resolve1h 24m—
Outages we detected00
Transparency score100/100100/100

Where Claude and DeepSeek Chat differ

  • Claude reported 1.9× as many incidents as DeepSeek Chat over the last 90 days (39 vs 20).
  • Claude had 21 partial or major outages, compared with 4 for DeepSeek Chat.

90-day uptime

Claude

Aug 5, 2026: 95.32% uptime, 2 incidents (Degraded performance)Aug 6, 2026 – Aug 11, 2026: no incidentsAug 12, 2026: 97.32% uptime, 1 incident (Degraded performance)Aug 13, 2026: 96.70% uptime, 1 incident (Partial outage)Aug 14, 2026: 99.90% uptime, 1 incident (Partial outage)Aug 15, 2026: 99.04% uptime, 1 incident (Partial outage)Aug 16, 2026: 97.52% uptime, 1 incident (Major outage)Aug 17, 2026: 99.03% uptime, 1 incident (Degraded performance)Aug 18, 2026: 98.31% uptime, 1 incident (Degraded performance)Aug 19, 2026: 99.16% uptime, 1 incident (Degraded performance)Aug 20, 2026: 98.78% uptime, 2 incidents (Partial outage)Aug 21, 2026 – Aug 23, 2026: no incidentsAug 24, 2026: 92.72% uptime, 3 incidents (Partial outage)Aug 25, 2026 – Aug 30, 2026: no incidentsAug 31, 2026: 98.91% uptime, 2 incidents (Degraded performance)Sep 1, 2026: 99.15% uptime, 2 incidents (Degraded performance)Sep 2, 2026: 99.08% uptime, 1 incident (Partial outage)Sep 3, 2026: 93.19% uptime, 2 incidents (Partial outage)Sep 4, 2026 – Sep 10, 2026: no incidentsSep 11, 2026: 99.39% uptime, 1 incident (Partial outage)Sep 12, 2026 – Sep 14, 2026: no incidentsSep 15, 2026: 97.00% uptime, 1 incident (Partial outage)Sep 16, 2026 – Sep 21, 2026: no incidentsSep 22, 2026: 96.59% uptime, 1 incident (Partial outage)Sep 23, 2026 – Sep 28, 2026: no incidentsSep 29, 2026: 95.63% uptime, 1 incident (Partial outage)Sep 30, 2026 – Oct 4, 2026: no incidentsOct 5, 2026: 99.44% uptime, 1 incident (Partial outage)Oct 6, 2026: 99.35% uptime, 1 incident (Partial outage)Oct 7, 2026 – Oct 20, 2026: no incidentsOct 21, 2026: 99.58% uptime, 1 incident (Degraded performance)Oct 22, 2026: 97.32% uptime, 1 incident (Degraded performance)Oct 23, 2026: 98.45% uptime, 1 incident (Major outage)Oct 24, 2026: 97.74% uptime, 3 incidents (Major outage)Oct 25, 2026: 95.42% uptime, 2 incidents (Partial outage)Oct 26, 2026: no incidentsOct 27, 2026: 97.10% uptime, 2 incidents (Partial outage)Oct 28, 2026: 96.51% uptime, 2 incidents (Degraded performance)Oct 29, 2026 – Nov 2, 2026: no incidents
90 days ago99.264% average daily uptimeToday

DeepSeek Chat

Aug 5, 2026 – Aug 6, 2026: no incidentsAug 7, 2026: 100% uptime, 1 incident (Degraded performance)Aug 8, 2026 – Aug 13, 2026: no incidentsAug 14, 2026: 100% uptime, 2 incidents (Degraded performance)Aug 15, 2026 – Aug 17, 2026: no incidentsAug 18, 2026: 100% uptime, 1 incident (Degraded performance)Aug 19, 2026: 100% uptime, 1 incident (Degraded performance)Aug 20, 2026: no incidentsAug 21, 2026: 100% uptime, 1 incident (Degraded performance)Aug 22, 2026 – Sep 1, 2026: no incidentsSep 2, 2026: 100% uptime, 1 incident (Major outage)Sep 3, 2026 – Sep 13, 2026: no incidentsSep 14, 2026: 100% uptime, 1 incident (Major outage)Sep 15, 2026: 100% uptime, 2 incidents (Degraded performance)Sep 16, 2026: no incidentsSep 17, 2026: 100% uptime, 1 incident (Degraded performance)Sep 18, 2026 – Sep 19, 2026: no incidentsSep 20, 2026: 100% uptime, 1 incident (Degraded performance)Sep 21, 2026 – Sep 22, 2026: no incidentsSep 23, 2026: 100% uptime, 2 incidents (Degraded performance)Sep 24, 2026 – Sep 30, 2026: no incidentsOct 1, 2026: 100% uptime, 1 incident (Degraded performance)Oct 2, 2026 – Oct 7, 2026: no incidentsOct 8, 2026: 100% uptime, 1 incident (Degraded performance)Oct 9, 2026 – Oct 11, 2026: no incidentsOct 12, 2026: 100% uptime, 2 incidents (Major outage)Oct 13, 2026 – Oct 14, 2026: no incidentsOct 15, 2026: 100% uptime, 1 incident (Major outage)Oct 16, 2026 – Oct 19, 2026: no incidentsOct 20, 2026: 100% uptime, 1 incident (Degraded performance)Oct 21, 2026 – Nov 2, 2026: no incidents
90 days ago100% average daily uptimeToday

Recent Claude incidents

Full Claude reliability report →

Recent DeepSeek Chat incidents

Full DeepSeek Chat reliability report →

Other AI chat assistants to consider

  • Gemini · #1 · 99.94% uptime
  • Perplexity · #2 · 99.83% uptime
  • Grok · #3 · 99.78% uptime
  • Pi · #6 · 99.01% uptime

See the full most reliable ai chat assistants ranking →