# Changelog > Dated record of changes to constant-k services, plans, My Account and these docs, newest first. Source: https://docs.constant-k.com/get-started/changelog/ Each row is one change, dated in US Eastern time. ## November 2026 | Date | Area | Change | | :---- | :-------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Nov 1 | [Website] | Sign-up refuses an email address with three or more dots before the @, and a Gmail address that is the same inbox as an account that already exists (Gmail ignores dots and anything after a +). A refused sign-up shows a popup that says why. | ## October 2026 | Date | Area | Change | | :----- | :-------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Oct 31 | [Kaldera] | Kaldera now runs Yellowstone gRPC 16.2.0 (was 16.1.5): `fromSlot` works only on the first request of a stream, and at `confirmed` and `finalized` commitment a slot's status updates now arrive after the slot's data. | | Oct 31 | [My Account] | Billing shows the date your card is next charged. When you pay with USDC for the same plan as your card plan, the next card charge moves to after the USDC time, and Billing says so. | | Oct 31 | [My Account] | The renewal date in Plan Info is the same as the date Stripe bills, and Billing says that new payments show in Transactions within 10 minutes. | | Oct 31 | [Plans] | When you pay for a plan during its trial, you get the email that confirms the paid plan. | | Oct 31 | [Solana RPC] | [Jito bundles](https://docs.constant-k.com/rpc/bundles/): `sendBundle`, `getBundleStatuses` and `getInflightBundleStatuses` in the Amsterdam, Frankfurt and New York regions spend less time on our servers before each request goes on to Jito. | | Oct 30 | [Solana RPC] | Staked `sendTransaction` in the Amsterdam, Frankfurt and New York regions spends less time on our servers before each transaction is sent on. | | Oct 30 | [My Account] | My Account is now four pages, under My Account at the top of the site: Account Info (email, username, change your password), Billing (your plan, payment method, all payments, Rewards and Referrals), Endpoints (your API key, endpoint URLs and ShredQuasar) and My Usage (the Upstream and Jito Relay charts). Old My Account links open the right page. | | Oct 30 | [My Account] | On the Billing page, card payers see the email they used in Stripe, Manage billing opens your own Stripe page with no sign-in, and Cancel subscription opens Stripe's cancel step for your plan. Transactions lists every card and USDC payment, with a link to its Stripe invoice or Solana transaction. | | Oct 29 | [Plans] | The sustained rate for older transactions (`getTransaction`) in the Nexus plan is now 3 rps, down from 10 rps. A key over it is slowed step by step over 7 days, never cut off. See [Upstream limits](https://docs.constant-k.com/get-started/upstream-limits/#burst-and-sustained-rates). | | Oct 29 | [Plans] | An upgrade to a higher plan now takes your unused time off the price. With USDC, the [pricing page](https://www.constant-k.com/pricing/) and the checkout show your upgrade price: the new plan's price minus the unused part of your current plan. With a card, the pricing page shows what your card pays now, and Upgrade now changes your card plan for exactly that amount. Adding time to the same plan still costs the full or discounted price. | | Oct 29 | [Plans] | Pay for a plan with USDC and a discount code, and your account gets its own discount code with the same discount and no end date. USDC plans do not renew by themselves, so paste your code on the [pricing page](https://www.constant-k.com/pricing/) each time you pay. The code is emailed to you and shown on My Account. Card plans keep their discount on the card subscription, as before. | | Oct 29 | [Docs] | [Plans & Limits](https://docs.constant-k.com/get-started/plans-and-limits/) shows rates as rps. Burst and sustained rates show as two numbers, such as 20/5 rps. [Upstream limits](https://docs.constant-k.com/get-started/upstream-limits/#burst-and-sustained-rates) shows Burst and Sustained side by side for each plan. | | Oct 29 | [Docs] | [Sending transactions](https://docs.constant-k.com/rpc/sending-transactions/#durable-nonces) has a Durable nonces section: Solana's plan to remove them, the replacement and what changes for RPC clients. | | Oct 29 | [Website] | On the [pricing](https://www.constant-k.com/pricing/) cards, SWQoS, getSFA History, getTFA History (`getTransactionsForAddress`) and Cube Runner Block Lookup link to their docs pages. Rates marked \* are burst rates; the sustained rates are on [Plan Limits](https://www.constant-k.com/plan_limits/). Plan Limits shows burst / sustained in one box for the methods in purple and groups the Jito relay methods in green, each group with an info box at the top. The pricing cards and Plan Limits give rates as requests per second, for example 200 rps, and burst / sustained as 20/5 rps. | | Oct 29 | [Plans] | [Upstream limits](https://docs.constant-k.com/get-started/upstream-limits/) are now a burst rate and a sustained rate on each plan. The burst rate is the plan rate, as before. The sustained rate is the most a key can average over 24 hours, all regions together: staked `sendTransaction` 0.25/s (Operator), 2/s (Blade Runner) and 5/s (Nexus); older signatures (`getSignaturesForAddress`) 2/s, older transactions (`getTransaction`) 10/s and `getTransactionsForAddress` 3/s (Nexus). A key over its sustained rate is slowed step by step over 7 days, never cut off. Staked sends are no longer listed as unlimited per month. The global limits and the line of 3,000,000 staked sends per month per region no longer decide which keys are slowed. | | Oct 29 | [Website] | When you are signed in on constant-k.com, the [support desk](https://www.constant-k.com/open-ticket/) signs you in by itself, with no click. View your ticket links in support emails now open the ticket on phones too. | | Oct 29 | [Plans] | [Upstream limits](https://docs.constant-k.com/get-started/upstream-limits/#what-happens-when-a-key-is-slowed): a limited API key is no longer stopped when it reaches its 24-hour limit on older signatures (`getSignaturesForAddress`), older transactions (`getTransaction`) and `getTransactionsForAddress`. It keeps its allowed rate: a request waits up to 3 s (5 s for `getTransactionsForAddress`) for the key's next turn, and the key can save up to 1 hour of its allowed calls for a burst. | | Oct 29 | [Website] | The site menu has a Support item with Docs, Open a Ticket and Contact Us under it, laid out like Products. On phones the menu scrolls with the page, so every item can be reached, and a tap outside the menu closes it. | | Oct 28 | [My Account] | In the Jito Relay section, an account without an API key now sees which plans include bundles, not a message that the data is not available. | | Oct 28 | [Plans] | The [global limits](https://docs.constant-k.com/get-started/upstream-limits/) are shared out again between the methods, based on recent use. Staked `sendTransaction` always keeps at least half. Per day: staked `sendTransaction` 1,449,000 (was 1,946,000), `getSignaturesForAddress` 348,000 (was 440,000), `getTransaction` 311,000 (was 215,000), `getTransactionsForAddress` 55,000 (was 57,000), `getBlock` 16,000 blocks (was 2,000). | | Oct 28 | [Docs] | [Jito bundles](https://docs.constant-k.com/rpc/bundles/): the Help raise the limit section is removed. | | Oct 27 | [Solana RPC] | `sendBundle`, `getBundleStatuses` and `getInflightBundleStatuses` are served on the `rpc-` hostnames only. The `staked-rpc-` hostnames now refuse them. Bundles always went straight to the Jito Block Engine, so the relay does not change. | | Oct 27 | [My Account] | Every account now has the ShredQuasar section: your ShredQuasar services, or a link to a free [trial](https://www.constant-k.com/shredquasar-trial/) of 1 hour and the plans. The left menu keeps the section you click marked. | | Oct 27 | [Website] | Sign in to the [support desk](https://www.constant-k.com/open-ticket/) with your constant-k account: no second password. Your name, email and plan carry over, and changes to your account reach the support desk within a minute. | | Oct 27 | [Website] | New [support desk](https://www.constant-k.com/open-ticket/): open a ticket and follow it on the web or by email, on desktop and phone. Open Ticket in the site menu, after Docs, leads there. The menu now fits at every screen width, and product names in the phone menu are no longer cut off. | | Oct 27 | [Plans] | [Upstream limits](https://docs.constant-k.com/get-started/upstream-limits/) are on for staked sends and history lookups (`getSignaturesForAddress`, `getTransaction`, `getTransactionsForAddress`). The heaviest users' 24-hour average is lowered step by step over 7 days; burst rates do not change. | | Oct 27 | [Cube Runner] | The monthly allowance of older blocks resets on each API key's own monthly term, on the same day and time as the plan's renewal date. An API key without a paid plan term, such as a trial key, resets at 00:00 UTC on the 1st. | | Oct 27 | [Docs] | Changelog page published, with changes since Sep 28. | | Oct 27 | [Docs] | [Upstream limits](https://docs.constant-k.com/get-started/upstream-limits/) page published. Plan burst rates always apply; a global monthly limit on upstream calls limits only the heaviest users' 24-hour average. | | Oct 27 | [My Account] | New Jito Relay section: the share of bundles relayed, send and landing bars, and a 24-hour history for each API key. | | Oct 27 | [My Account] | The Upstream section shows three panels and a graph for each method, and each API key's own Cube Runner monthly term. | | Oct 27 | [Solana RPC] | `sendBundle`: an API key with no bundle for 24 hours starts over at the full plan rate. | | Oct 26 | [Solana RPC] | `simulateBundle` available. Measured warm simulations: 2–5 ms. | | Oct 26 | [Solana RPC] | `sendBundle` landing rate: when fewer than half of an API key's recent bundles land, its rate and relay share fall, and its bundles are simulated before relay. Bundles from keys whose bundles land are not simulated and never wait. | | Oct 26 | [Plans] | `simulateBundle`, `getBundleStatuses` and `getInflightBundleStatuses` limits: Operator 5/s, Blade Runner 25/s, Nexus 100/s. | | Oct 26 | [Docs] | [Hosting Providers](https://docs.constant-k.com/get-started/hosting-providers/) page published: hosting provider, data center and sign-up link for each region. | | Oct 25 | [Solana RPC] | `sendBundle` plan rates: Operator 1 every 2 s, Blade Runner 2/s, Nexus 5/s, with a weighted fair queue for each region's relay. | | Oct 25 | [Solana RPC] | Exact duplicate bundles are refused for 60 seconds per region. When several versions of one trade arrive, the version with the best tip plus priority fee is relayed. | | Oct 25 | [Docs] | [Jito bundles](https://docs.constant-k.com/rpc/bundles/): relay rate of 5/s per region, the duplicate rule, the 1-second turn wait and one version per trade. | | Oct 24 | [Docs] | [Jito bundles](https://docs.constant-k.com/rpc/bundles/) page published: relay, limits, taking turns and raising the rate. | | Oct 23 | [Solana RPC] | Jito bundles: `sendBundle`, `getBundleStatuses` and `getInflightBundleStatuses` available within plan limits. API keys share each region's relay in turns. | | Oct 23 | [Docs] | Method pages for `sendBundle`, `getBundleStatuses` and `getInflightBundleStatuses`, with relay turns and `Retry-After` headers. | | Oct 22 | [Plans] | Trials include staked sends, capped at 1,000 sends per region. A subscriber can trial a higher plan with the same API key and returns to the paid plan after the trial. | | Oct 22 | [Solana RPC] | History lookups: older pages of `getSignaturesForAddress` and `getTransactionsForAddress` return faster. Fixed an empty answer for some `until` cursors. | | Oct 22 | [Cube Runner] | Block footers are kept for 15 days in each region. | | Oct 22 | [Website] | Front page and pricing page: new logo strip. More disposable email domains are refused at sign-up. | | Oct 22 | [Docs] | Trials: one-hour trial with capped staked sends; subscribers can trial a higher plan. | | Oct 21 | [Cube Runner] | `getBlock` with `footer: true` returns Alpenglow block footers. | | Oct 21 | [Cube Runner] | `getBlock` with `rewards: false` in base64 returns faster. Calls that took about 2 seconds in one region are fixed. | | Oct 21 | [Kaldera] | The `blockFooter` filter streams Alpenglow block footers. Replay carries block footers from Oct 21, 10:05 pm. | | Oct 21 | [Turbo Kaldera] | Turbo Kaldera streams Alpenglow blocks. | | Oct 21 | [Website] | [Benchmarks](https://www.constant-k.com/benchmarks/) page: stream-speed charts for each region, with a legend that isolates one series. | | Oct 21 | [Docs] | Block footers: `getBlock` with `footer: true`, the Kaldera `blockFooter` filter, Turbo Kaldera and replay behaviour. | | Oct 20 | [Solana RPC] | `getProgramAccounts`: durable nonce accounts (System Program with `dataSize: 80`) and four more programs answer from the in-memory index. Other System Program scans are refused. | | Oct 19 | [Solana RPC] | Fixed slow `getProgramAccounts` answers in one region for scans outside the in-memory index. | | Oct 19 | [ShredPrism] | ShredPrism entries arrive with lower latency. | | Oct 19 | [Docs] | Kaldera filter limits for each filter type published. Vote transactions are not replayed from the replay store. | | Oct 18 | [Website] | Amsterdam region added to the website's endpoints and region cards. | | Oct 17 | [Neon Zero] | Neon Zero launched: `sendTransaction` gated on each region's distance to the current slot leader, included in the Nexus plan at 50/s staked. When the gate signal is missing, the send is refused. | | Oct 17 | [Solana RPC] | `getProgramAccounts` responses carry an `X-CK-Source` header: `index` or `disk-scan`. | | Oct 17 | [Plans] | Trial reset: every account can start a trial again. | | Oct 17 | [Website] | Neon Zero product page, My Account section and Plan Limits rows. | | Oct 17 | [Docs] | [Neon Zero](https://docs.constant-k.com/neon-zero/) pages. Product names page updated. `getProgramAccounts`: the `X-CK-Source` header, index versus disk scan, and `changedSinceSlot` is inclusive. | | Oct 16 | [Solana RPC] | History past the ledger window, included in the Nexus plan: `getSignaturesForAddress`, `getTransaction` and the new `getTransactionsForAddress`. | | Oct 16 | [Solana RPC] | `getProgramAccounts` and `getProgramAccountsV2`: Meteora DAMM V1 indexed (12 programs), and index answers match the validator byte for byte. Measured `getProgramAccountsV2` median latency fell from 931 ms to 310 ms. | | Oct 16 | [Solana RPC] | Address lookup table lookups: 25/s in the Blade Runner plan, 75/s in the Nexus plan. | | Oct 16 | [Website] | Plan Limits page: per-plan capability tables, history lookups included. | | Oct 16 | [Docs] | History lookups: per-plan limit tables and a `getTransactionsForAddress` page. [Address lookup tables](https://docs.constant-k.com/rpc/address-lookup-tables/) page published. `getProgramAccounts` rates and indexed programs updated. | | Oct 15 | [Solana RPC] | `getProgramAccounts` and `getProgramAccountsV2` for the most-used programs answer from an in-memory index (first programs Oct 14). Rates raised to 25/s in the Blade Runner plan and 75/s in the Nexus plan. | | Oct 15 | [Docs] | `getProgramAccounts`: indexed programs table and new rates. | | Oct 10 | [Plans] | New prices: Blade Runner $99 a month or $990 a year; Nexus $299 a month or $2,990 a year. Operator is unchanged. | | Oct 9 | [Plans] | Referral credit: a crypto Operator or Blade Runner subscriber who redeems for the Nexus plan starts it at once (was queued). The Rewards page shows two labelled price-lock codes. | | Oct 9 | [Docs] | [Referrals](https://docs.constant-k.com/get-started/referrals/) page published. FAQ: the remaining time on an upgrade is pro-rated. Cube Runner is no longer in beta. | | Oct 6 | [Solana RPC] | `getProgramAccounts` and `getProgramAccountsV2` included in the Blade Runner plan: 2/s, 1 open request per API key. | | Oct 6 | [Solana RPC] | `getTokenLargestAccounts` available: 2/s in the Blade Runner plan, 30/s in the Nexus plan. | | Oct 5 | [Cube Runner] | Each region also serves blocks that another region has stored. | | Oct 5 | [Website] | [Cube Runner](https://www.constant-k.com/cube-runner/) product page. Plan Limits, the front page and the pricing cards show live limit values. | | Oct 5 | [Docs] | `getTokenLargestAccounts` page. `getProgramAccounts` in the Blade Runner plan. FAQ, and `429` / `503` error texts as the service returns them. | | Oct 4 | [Cube Runner] | Cube Runner launched in each region: `getBlock` cache and long-term storage, a monthly allowance per region, a most-wanted queue, and error `-32001` for plans without access. | | Oct 4 | [Kaldera] | Nexus plan streams are limited per API key: `Subscribe` 150 MB/s, `SubscribeDeshred` 75 MB/s. | | Oct 4 | [Website] | Front page: Cube Runner section. Plan Limits: Cube Runner and Turbo Kaldera limits and a Staked Sends (SWQoS) card. Sign-ups and trials from disposable email domains are refused. | | Oct 4 | [Docs] | [Cube Runner](https://docs.constant-k.com/cube-runner/) page published. The sidebar lists every product on every page. | | Oct 2 | [Solana RPC] | Amsterdam region added. [Endpoints](https://docs.constant-k.com/get-started/endpoints/) lists its URLs. | ## September 2026 | Date | Area | Change | | :----- | :-------- | :--------------------------------- | | Sep 28 | [Website] | Trial buttons read "1 Hour Trial". | {/* Area links. Each row's Area is one of these names in brackets, for example [Kaldera]. A new area needs a line here. */} [Solana RPC]: /rpc/ [Kaldera]: /kaldera/ [Turbo Kaldera]: /kaldera/turbo-kaldera/ [ShredPrism]: /shredprism/ [ShredQuasar]: /shredquasar/ [Cube Runner]: /cube-runner/ [Neon Zero]: /neon-zero/ [Plans]: /get-started/plans-and-limits/ [My Account]: https://www.constant-k.com/my-account/ [Website]: https://www.constant-k.com/ [Docs]: /