Measurement program launched August 5, 2026. This independent report tracks DeepSeek availability, API success, latency, and published incident history using a transparent methodology. The first complete 30-day result does not exist yet and is not estimated on this page.
The DeepSeek Global Reliability, Availability & API Performance Report — 2026 is an independent measurement project in the DeepSeek research hub and a supporting evidence layer for our independent DeepSeek AI guide. It asks a narrower question than a product review: when a user or application tries to reach DeepSeek, what response does it receive, how long does that response take, and how consistently does that outcome repeat across the locations that actually produced valid measurements?
Validated collection begins at 2026-08-06T00:23:34.468Z (August 5 in the report operator’s Pacific time zone). This is the first released observation and is not rounded backward. Until 30 continuous days have elapsed and the dataset passes completeness checks, this page is a methodology release and collection-status report—not a 30-day uptime claim, service-level agreement, or ranking of regions.
Report Status on August 5, 2026
| Field | Current status |
|---|---|
| Independent data collection | Started at 2026-08-06T00:23:34.468Z, the first released UTC dataset row |
| 30-day measurement window | Not complete |
| 30-day availability result | Not published and not estimated |
| Regional performance comparison | Pending sufficient samples and completeness checks |
| Official DeepSeek incident history | Separate publisher-reported evidence layer |
| Report operator | Chat-Deep.ai; independent and not affiliated with DeepSeek |
Latest Validated Measurements
The report module below reads the latest validated daily summary. It reports only measured attempts and separately rendered availability and latency artifacts; when no validated rows exist, it shows that state instead of estimating a result.
| AWS region | Check | Measured | Successful | Skipped | Observed success rate | Latency p50 | Latency p95 | TTFT p50 |
|---|---|---|---|---|---|---|---|---|
| ap-south-1 | api_chat_completion_flash |
1 | 1 | 0 | 100% | 866.6 ms | 866.6 ms | 751.8 ms |
| ap-south-1 | api_chat_completion_pro |
1 | 1 | 0 | 100% | 1,116.5 ms | 1,116.5 ms | 924.7 ms |
| ap-south-1 | api_models |
1 | 1 | 0 | 100% | 798.0 ms | 798.0 ms | 797.8 ms |
| ap-south-1 | developer_platform |
0 | 0 | 1 | Insufficient data | — | — | — |
| ap-south-1 | official_chat_web |
0 | 0 | 1 | Insufficient data | — | — | — |
| ap-south-1 | official_home |
1 | 1 | 0 | 100% | 720.7 ms | 720.7 ms | 705.1 ms |
| ap-south-1 | official_status |
1 | 1 | 0 | 100% | 1,181.2 ms | 1,181.2 ms | 1,181.0 ms |
| ap-southeast-1 | api_chat_completion_flash |
1 | 1 | 0 | 100% | 1,123.1 ms | 1,123.1 ms | 976.4 ms |
| ap-southeast-1 | api_chat_completion_pro |
1 | 1 | 0 | 100% | 1,090.9 ms | 1,090.9 ms | 904.2 ms |
| ap-southeast-1 | api_models |
1 | 1 | 0 | 100% | 715.0 ms | 715.0 ms | 714.7 ms |
| ap-southeast-1 | developer_platform |
0 | 0 | 1 | Insufficient data | — | — | — |
| ap-southeast-1 | official_chat_web |
0 | 0 | 1 | Insufficient data | — | — | — |
| ap-southeast-1 | official_home |
1 | 1 | 0 | 100% | 775.2 ms | 775.2 ms | 774.6 ms |
| ap-southeast-1 | official_status |
1 | 1 | 0 | 100% | 1,055.3 ms | 1,055.3 ms | 1,035.0 ms |
| eu-central-1 | api_chat_completion_flash |
1 | 1 | 0 | 100% | 1,131.6 ms | 1,131.6 ms | 996.5 ms |
| eu-central-1 | api_chat_completion_pro |
1 | 1 | 0 | 100% | 1,468.8 ms | 1,468.8 ms | 1,266.1 ms |
| eu-central-1 | api_models |
1 | 1 | 0 | 100% | 957.3 ms | 957.3 ms | 957.0 ms |
| eu-central-1 | developer_platform |
0 | 0 | 1 | Insufficient data | — | — | — |
| eu-central-1 | official_chat_web |
0 | 0 | 1 | Insufficient data | — | — | — |
| eu-central-1 | official_home |
1 | 1 | 0 | 100% | 986.6 ms | 986.6 ms | 986.0 ms |
| eu-central-1 | official_status |
1 | 1 | 0 | 100% | 1,086.7 ms | 1,086.7 ms | 1,086.5 ms |
| sa-east-1 | api_chat_completion_flash |
1 | 1 | 0 | 100% | 1,423.6 ms | 1,423.6 ms | 1,292.9 ms |
| sa-east-1 | api_chat_completion_pro |
1 | 1 | 0 | 100% | 1,327.5 ms | 1,327.5 ms | 1,156.5 ms |
| sa-east-1 | api_models |
1 | 1 | 0 | 100% | 991.5 ms | 991.5 ms | 991.2 ms |
| sa-east-1 | developer_platform |
0 | 0 | 1 | Insufficient data | — | — | — |
| sa-east-1 | official_chat_web |
0 | 0 | 1 | Insufficient data | — | — | — |
| sa-east-1 | official_home |
1 | 1 | 0 | 100% | 939.4 ms | 939.4 ms | 938.6 ms |
| sa-east-1 | official_status |
1 | 1 | 0 | 100% | 839.4 ms | 839.4 ms | 839.2 ms |
| us-east-1 | api_chat_completion_flash |
1 | 1 | 0 | 100% | 1,152.3 ms | 1,152.3 ms | 1,024.2 ms |
| us-east-1 | api_chat_completion_pro |
1 | 1 | 0 | 100% | 1,326.8 ms | 1,326.8 ms | 1,134.7 ms |
| us-east-1 | api_models |
1 | 1 | 0 | 100% | 620.1 ms | 620.1 ms | 619.8 ms |
| us-east-1 | developer_platform |
0 | 0 | 1 | Insufficient data | — | — | — |
| us-east-1 | official_chat_web |
0 | 0 | 1 | Insufficient data | — | — | — |
| us-east-1 | official_home |
1 | 1 | 0 | 100% | 809.6 ms | 809.6 ms | 749.5 ms |
| us-east-1 | official_status |
1 | 1 | 0 | 100% | 950.8 ms | 950.8 ms | 950.6 ms |
| us-west-2 | api_chat_completion_flash |
1 | 1 | 0 | 100% | 1,244.3 ms | 1,244.3 ms | 1,099.4 ms |
| us-west-2 | api_chat_completion_pro |
1 | 1 | 0 | 100% | 1,164.7 ms | 1,164.7 ms | 1,002.7 ms |
| us-west-2 | api_models |
1 | 1 | 0 | 100% | 709.7 ms | 709.7 ms | 709.5 ms |
| us-west-2 | developer_platform |
0 | 0 | 1 | Insufficient data | — | — | — |
| us-west-2 | official_chat_web |
0 | 0 | 1 | Insufficient data | — | — | — |
| us-west-2 | official_home |
1 | 1 | 0 | 100% | 884.9 ms | 884.9 ms | 879.7 ms |
| us-west-2 | official_status |
1 | 1 | 0 | 100% | 1,081.5 ms | 1,081.5 ms | 1,081.4 ms |
Interpretation: a successful observation means the configured check passed at that time and location. It does not prove that every DeepSeek user, endpoint, or network path was available.
What This DeepSeek Reliability Report Will Measure
The report separates four questions that are often collapsed into the word “uptime”:
- Reachability: can the probe receive an allowed HTTP response from the configured public endpoint within the client timeout?
- API availability: does a controlled authenticated request return HTTP 200 and a parseable response that satisfies the endpoint contract?
- API performance: how do time to first byte, time to first streamed content, and total completion time vary for a fixed synthetic workload?
- Official incident reporting: what incidents, component states, and maintenance notices did DeepSeek publish on its own status service?
These measures are related, but they are not interchangeable. A reachable website does not prove that authenticated generation works. A slow completion is not automatically downtime. One failed regional probe does not establish a global outage. An official incident can provide useful context, but it cannot be inserted into missing independent measurements as if our probes observed it.
Official DeepSeek Status History and Our Measurements Are Separate
DeepSeek operates an official service-status page with separate API Service and Web Chat Service components, a rolling uptime view, and an incident-history page. Those records are statements published by DeepSeek. When referenced, they are preserved as a separately sourced editorial evidence layer and are never inserted into missing independent probe rows.
We do not call an incident “independently confirmed” merely because it appears on the official page. We also do not call a DeepSeek outage from one synthetic failure. The report presents the two evidence layers side by side:
Pre-Launch Monitor Validation Exclusion
Excluded validation run, August 5–6, 2026: the first monitor build requested DeepSeek’s public status custom domain. Connections from the AWS test environment were reset before an HTTP response, while the underlying official Statuspage JSON endpoint returned HTTP 200. Those rows were treated as monitor-configuration evidence, archived outside the released raw-data prefix, and excluded from availability, latency, CSV, charts, and the published collection start. Probe version 1.0.1 uses the official Statuspage JSON endpoint and evaluates its published status indicator.
| Evidence layer | What it can support | What it cannot support by itself |
|---|---|---|
| Official DeepSeek status history | What DeepSeek published about a component or incident | Independent confirmation, regional impact, or an unreported failure |
| Chat-Deep.ai synthetic probes | What the configured probes observed at recorded times and locations | Every user’s experience, internal root cause, or global impact outside measured coverage |
Measurement Design
1. Use Synthetic, Repeatable Requests
API probes use synthetic English prompts, fixed request settings, and bounded output. They contain no visitor prompt, personal information, customer document, production secret, or copied user conversation. The request profile is versioned so a model, prompt, streaming, or output-limit change creates a new series rather than silently changing an existing one.
The initial API scope uses the current model identifiers published in DeepSeek’s official Models & Pricing documentation: deepseek-v4-flash and deepseek-v4-pro. Each configured region tests Flash and Pro as separate series every 15 minutes. A successful Flash request cannot fill a missing Pro observation, and a retired alias is not substituted without creating a new series. See the DeepSeek model names reference for the distinction between API IDs, display names, and repository labels.
2. Keep Probe Load Far Below Published Concurrency
This is observation, not stress testing. DeepSeek’s Rate Limit & Isolation documentation currently lists account-level concurrency limits of 2,500 for deepseek-v4-flash and 500 for deepseek-v4-pro, with HTTP 429 when the limit is exceeded. Our schedule is intentionally far below those values. We do not increase traffic to find a breaking point, and we do not present a low-volume probe as a load-capacity benchmark.
3. Preserve Every Scheduled Outcome
Version 1.0 records one primary outcome for each probe in each scheduled run. It does not use an immediate in-run retry to replace a failure. The next scheduled run is a new observation, so a later success cannot erase the earlier result.
4. Record Available Timing Milestones
Each observation records UTC time, probe name, AWS region, endpoint, method, success or skipped state, HTTP status, total duration, first-response timing, time to first generated token for streaming requests, requested and returned model IDs, token counts where returned, and a normalized error category. The standard-library client does not expose separate DNS, TCP-connect, or TLS phase timings, so this report does not claim them. API keys, prompts, headers, provider request IDs, and response text are never part of the public dataset.
DeepSeek documents connection keep-alive behavior that can include empty lines for non-streaming requests and SSE keep-alive comments for streaming requests. The parser must handle those signals without counting them as generated content. DeepSeek also states that the server closes a connection if inference has not started after 10 minutes. Our client timeout policy is disclosed separately and must not be described as DeepSeek’s internal timeout.
Success, Failure, and Degradation Rules
| Outcome | Classification rule | Reporting treatment |
|---|---|---|
| Successful API request | HTTP 200, parseable expected stream, exact synthetic response marker, and terminal stream event | Included in availability and latency denominators |
| HTTP 429 | Rate or concurrency rejection documented by DeepSeek | Failed end-to-end request; reported separately from confirmed server outage |
| HTTP 500 or 503 | Server error or overloaded response under DeepSeek’s official error taxonomy | Failed request; provider-error class |
| Network or timeout failure | No valid HTTP completion within the configured client timeout | Failed request; attribution remains unconfirmed unless corroborated |
| Credential or account failure | Credential unavailable, authentication rejected, or balance/configuration prevents a valid provider test | Marked skipped or monitor-invalid and excluded from the measured-availability denominator |
| Valid but slow response | Successful request with a high observed duration | Availability success and performance observation; never relabeled as downtime |
| Missing scheduled row | Collector did not produce a valid run artifact | Data gap, not success and not inferred outage |
The official DeepSeek error guide defines 400, 401, 402, 422, 429, 500, and 503 conditions. We retain the exact returned code, but any statement about root cause requires more evidence than the code alone.
How Availability and API Performance Are Calculated
Measured availability (%) =
successful eligible first attempts
---------------------------------- × 100
all eligible first attemptsThe report always publishes the numerator, denominator, excluded-row count, data completeness, and reporting window with the percentage. No percentage is shown when the denominator is zero. Missing rows are never converted to successful checks. If completeness falls below the report’s declared threshold, the window is labeled incomplete even when the observed attempts were successful.
Latency percentiles use measured requests from an unchanged probe definition. The daily artifacts publish p50 and p95 total duration and time-to-first-token values with measured-attempt counts. Failed requests remain in availability and error summaries. Results are segmented by probe and valid AWS region, which keeps Flash and Pro observations separate instead of pooling unlike models.
Results Available at Collection Launch
On August 5, 2026, the defensible publication state is collection launch. First validated launch-day rows now exist across all six named AWS regions, but there is not yet a complete 24-hour, 7-day, or 30-day window. Therefore:
- No 30-day DeepSeek uptime percentage is claimed.
- No country or region is labeled fastest, slowest, best, or worst.
- No official incident is described as independently confirmed unless probe evidence supports that statement.
- No failed probe is described as a global DeepSeek outage.
- No service-level guarantee is inferred from observed measurements.
| Publication milestone | Minimum maturity | Allowed interpretation |
|---|---|---|
| Collection launch | First validated rows | Method and coverage only |
| 24-hour snapshot | At least 24 continuous hours plus completeness review | Short baseline, explicitly preliminary |
| 7-day update | Seven continuous days plus anomaly review | Early trend, not monthly reliability |
| 30-day report | Thirty continuous 24-hour periods from the first valid UTC row plus quality gates | Measured 30-day results for the disclosed probes only |
How to Use the Report
If you are checking a live problem, start with our live DeepSeek service check and then open the official DeepSeek status page. If you operate an integration, compare the returned HTTP code with our DeepSeek error-code guide and follow bounded retry rules. Do not retry invalid credentials or malformed requests in a tight loop.
For implementation details, use the DeepSeek API guide. For capabilities and access paths, use our DeepSeek models guide; for exact API and repository labels, use the DeepSeek model names reference. For time-sensitive platform changes that may affect test interpretation, consult the DeepSeek API updates tracker. Those pages provide product context; this report remains responsible only for the measurements and definitions stated here.
Limitations
- Synthetic workload: a fixed probe does not represent every prompt length, feature, account tier, or generation path.
- Measured locations only: “global” describes the report’s multi-region design, not universal coverage. Results name only AWS regions that produced valid rows.
- Network path: DNS, transit, cloud-provider routing, and regional peering can affect observed latency independently of model inference.
- Account context: balance, account limits, or scheduling can affect API outcomes. Authentication and balance failures caused by the monitor are excluded and disclosed.
- No internal telemetry: we cannot observe DeepSeek’s internal queues, infrastructure, root causes, or unreported maintenance.
- Status-page boundary: official incident records are publisher reports, not independent measurements.
- Changing product: model versions, API behavior, limits, and routing can change during the year. Material changes create annotations or a new series.
Update and Correction Policy
Every results update will state the report version, generated-at time in UTC, first and last valid sample, expected and observed sample counts, exclusions, and code/data release identifier. Corrections will preserve the earlier version and explain what changed. A chart is not updated by manually typing a preferred number; it must be regenerated from the validated dataset.
If a collection gap prevents a defensible conclusion, the report will say “insufficient data.” It will not interpolate uptime, copy an official rolling percentage into our measurement table, or extend a partial window to 30 days.
Frequently Asked Questions
Is this an official DeepSeek reliability report?
No. Chat-Deep.ai is independent and is not operated by, endorsed by, or affiliated with DeepSeek. Official incidents and component states are attributed to DeepSeek’s status service; synthetic measurements are attributed to this report.
What is DeepSeek’s 30-day uptime in this report?
No independent 30-day result exists yet. Collection begins August 5, 2026. The first complete window ends 30 continuous 24-hour periods after the first valid UTC dataset row, subject to completeness and validation checks.
Does one failed probe establish a broad outage?
No. It means one probe failed from one measured path at one recorded time. The report checks nearby attempts, other valid regions, HTTP/error class, and the official status record before describing the scope.
Are Web Chat and API availability the same?
No. They are different service paths and are reported separately. Website reachability cannot prove that an authenticated API generation or account-based chat action succeeded.
Why can API latency vary by region?
The total observation can include network resolution, routing, connection setup, provider queueing, generation, and transfer. The collector records first-response timing, first-token timing, and total duration but does not expose separate phase timings. Region is therefore an observation point, not proof of a server’s physical location or root cause.
Will the raw prompts or API keys be published?
No API key, visitor prompt, account value, or response content belongs in the public dataset. The synthetic request specification, redacted telemetry, validation rules, and derived aggregates can be published without exposing credentials or user data.
Editorial disclosure: Data collection begins August 5, 2026. This page must not display a 30-day result until the full window exists and passes the documented quality checks. Official DeepSeek incident records and Chat-Deep.ai measurements remain separate throughout the report.