diff --git a/README.md b/README.md
index a63cfbbb4..76ecca40e 100644
--- a/README.md
+++ b/README.md
@@ -109,12 +109,13 @@ Use the [guided setup](#install-ecc) or [native plugin commands](#claude-code-de
 <p align="center" aria-label="Partners and sponsors">
   <a href="https://www.coderabbit.ai" title="CodeRabbit"><img src="assets/images/sponsors/coderabbit.png" height="54" alt="CodeRabbit" /></a>&nbsp;&nbsp;&nbsp;
   <a href="https://www.greptile.com/go/ecc" title="Greptile"><img src="assets/images/sponsors/greptile.png" height="54" alt="Greptile" /></a>&nbsp;&nbsp;&nbsp;
-  <a href="https://www.atlascloud.ai/?utm_source=github&amp;utm_medium=link&amp;utm_campaign=ECC" title="Atlas Cloud"><picture><source media="(prefers-color-scheme: dark)" srcset="assets/images/sponsors/atlascloud-dark.svg" /><img src="assets/images/sponsors/atlascloud.svg" width="154" alt="Atlas Cloud" /></picture></a>&nbsp;&nbsp;&nbsp;
   <a href="https://platform.kimi.ai?aff=ecc" title="Moonshot AI - Kimi"><picture><source media="(prefers-color-scheme: dark)" srcset="assets/images/sponsors/moonshot-dark.png" /><img src="assets/images/sponsors/moonshot.png" width="132" alt="Moonshot AI - Kimi" /></picture></a>&nbsp;&nbsp;&nbsp;
   <a href="https://compute.itomarkets.com" title="Itô Markets"><picture><source media="(prefers-color-scheme: light)" srcset="assets/images/sponsors/ito-transparent-light.png" /><img src="assets/images/sponsors/ito-transparent.png" width="96" alt="Itô Markets" /></picture></a>&nbsp;&nbsp;&nbsp;
   <a href="https://serpapi.com/github-ecc" title="SerpApi: Web Search API"><picture><source media="(prefers-color-scheme: dark)" srcset="assets/images/sponsors/serpapi-logo-dark-mode.svg" /><img src="assets/images/sponsors/serpapi-logo-light-mode.svg" width="200" alt="SerpApi: Web Search API" /></picture></a>
 </p>
 
+<sub><strong>Past sponsors:</strong> <a href="https://www.atlascloud.ai/?utm_source=github&amp;utm_medium=link&amp;utm_campaign=ECC">Atlas Cloud</a></sub>
+
 <sub><strong>Community sponsors:</strong> <a href="https://github.com/mikejmorgan-ai">Mike Morgan</a> · <a href="https://github.com/jasonwu513">@jasonwu513</a> · <a href="https://github.com/1anter">@1anter</a> · <a href="https://github.com/massimotodaro">@massimotodaro</a> · <a href="https://github.com/meadmccabe">@meadmccabe</a></sub>
 
 <sub><a href="https://github.com/sponsors/affaan-m"><strong>Become a Sponsor</strong></a> · <a href="SPONSORS.md">Sponsor Tiers</a> · <a href="SPONSORING.md">Sponsorship Program</a></sub>
diff --git a/SPONSORS.md b/SPONSORS.md
index a760ddb37..bb63534d6 100644
--- a/SPONSORS.md
+++ b/SPONSORS.md
@@ -12,7 +12,6 @@ Thank you to everyone funding ECC's open-source work. Your sponsorship is what l
 |---------|------|-------|
 | [**CodeRabbit**](https://www.coderabbit.ai) | <img src="assets/images/sponsors/coderabbit.png" width="60" alt="CodeRabbit logo" /> | 2026 |
 | [**Greptile**](https://www.greptile.com/go/ecc) | <img src="assets/images/sponsors/greptile.png" width="60" alt="Greptile logo" /> | 2026 |
-| [**Atlas Cloud**](https://www.atlascloud.ai/?utm_source=github&utm_medium=link&utm_campaign=ECC) | <picture><source media="(prefers-color-scheme: dark)" srcset="assets/images/sponsors/atlascloud-dark.svg" /><img src="assets/images/sponsors/atlascloud.svg" width="120" alt="Atlas Cloud logo" /></picture> | 2026 |
 | [**Moonshot AI (Kimi)**](https://www.moonshot.ai) | <picture><source media="(prefers-color-scheme: dark)" srcset="assets/images/sponsors/moonshot-dark.png" /><img src="assets/images/sponsors/moonshot.png" width="100" alt="Moonshot AI Kimi logo" /></picture> | 2026 |
 | [**Itô**](https://compute.itomarkets.com) | <picture><source media="(prefers-color-scheme: light)" srcset="assets/images/sponsors/ito-transparent-light.png" /><img src="assets/images/sponsors/ito-transparent.png" width="88" alt="Itô Markets logo" /></picture> | 2026 |
 | [**SerpApi**](https://serpapi.com/github-ecc) | <picture><source media="(prefers-color-scheme: dark)" srcset="assets/images/sponsors/serpapi-logo-dark-mode.svg" /><img src="assets/images/sponsors/serpapi-logo-light-mode.svg" width="200" alt="SerpApi: Web Search API" /></picture> | 2026 |
@@ -21,6 +20,12 @@ Thank you to everyone funding ECC's open-source work. Your sponsorship is what l
 
 Run or self-host any open-source model. Itô partners with ECC on compute, while ECC remains provider-agnostic and any GPU provider works. The [Itô dashboard](https://compute.itomarkets.com) sponsorship link is passive: it does not invoke an RFQ, reserve capacity, provision compute, or configure serving. Separately, the opt-in `ecc ito find` bridge invokes the explicitly configured canonical Itô CLI and submits a live authenticated RFQ; it does not reserve capacity. Managed inference through Itô is not live yet.
 
+## Past Sponsors
+
+| Sponsor | Active period |
+|---------|---------------|
+| [**Atlas Cloud**](https://www.atlascloud.ai/?utm_source=github&utm_medium=link&utm_campaign=ECC) | 2026 |
+
 ## Team Sponsors — $200/mo
 
 | Sponsor | Since |