xAI: the pricing arc
xAI's arc runs from December 2024 to September 2026. Grok arrived free with a bounded allowance of questions and images, and the subscription carrying the new flagship repriced within hours of its release. The API rate card filled in from July 2025: a frontier rate at parity with the incumbents, a budget lane priced by context length, and a second meter counting successful tool invocations beside the token meter. In May 2026 eight models retired, their endpoints redirected to a higher-priced card. Since then the agent product sits behind the top plans, the newest models print context-tiered cards, and a version alias raised the Voice API floor. Tokens, then successes, then the version behind the name.
tracked and read.
first move to latest.
last re-checked.
Last tracked move:
xAI pricing moves, newest first.
- Dec 06, 2024Licensing + Packaging · Repackage
- Feb 18, 2025Pricing · Rate increase
- Jul 09, 2025Pricing · Rate card
- Sep 19, 2025Packaging + Pricing · Rate card
- Nov 19, 2025Licensing + Pricing · Unit swap
- May 15, 2026Licensing + Pricing · Rate card
- Jul 08, 2026Pricing · Rate card
- Aug 11, 2026Licensing + Packaging · Repackage
- Aug 12, 2026Pricing · Rate card
- Sep 13, 2026Pricing · Rate increase
The move
Between the September 6 and September 13, 2026 captures of xAI's models page, the Voice API agent starting rate moved up to the rate xAI's July 29, 2026 Grok Voice Think Fast 2.0 post printed, as the grok-voice-latest alias followed that version; every other listed price was unchanged.
The SPP read
Between the September 6 and September 13, 2026 captures of xAI's models page, the Voice API agent starting rate rose to the rate the July 29, 2026 Grok Voice Think Fast 2.0 post had printed, as the grok-voice-latest alias moved onto that version. Every other listed price held. The floor rose through the alias: the name a buyer calls stayed the same, the version behind it changed, and the newer version carries the higher published rate, so the version the alias resolves to sets the starting price.
The move
On August 12, 2026, xAI released Grok 4.6 with API pricing of $2 per million input tokens and $6 per million output tokens on prompts under 200k tokens, rising to $4 and $12 at 200k and above, and doubled included Grok 4.6 usage inside Cursor and Grok Build for the first week of availability.
The SPP read
xAI put Grok 4.6 on sale with a published API rate card that charges more for input and output once a prompt runs long, so the same call prices differently depending on how much context it carries. For the first week the vendor doubled the included usage of the model inside Grok Build and inside Cursor, a temporary allowance sitting on top of the rate card rather than a change to it. The rate is published for a newly available model rather than moved against the outgoing one, which is where this sits on xAI's arc.
The move
xAI gates Grok Bot behind premium tiers post-acquisition: available to SuperGrok Heavy subscribers at $300/month, Cursor Ultra at $200/month, with Cursor Teams Premium at $120 per seat per month as the minimum team entry point.
The SPP read
Grok Bot is not sold on its own. Access rides with the top tier of xAI's own subscription and of the Cursor plans, so a buyer reaches the agent by moving up a plan rather than by buying a separate product or metering the work it does. For a team the entry point is a per seat team plan, which sets the smallest unit at which an organization can adopt the capability.
The move
Grok 4.5 launched in the xAI API on July 8, 2026 at $2 per million input tokens and $6 per million output tokens (standard-context rates; long-context requests price higher).
The SPP read
Grok 4.5 lands at a fraction of the rates the incumbent frontier models charge, and its three-to-one output multiple is the mildest on the board. That is a challenger's price surface: make switching feel like found money and force the incumbents to defend their premium. For vendors building on model APIs, a widening spread between frontier price floors is margin room, but only for architectures that can route work across models without repricing the customer.
The move
xAI's grok-4.3 is priced at $1.25 per 1 million input tokens and $2.50 per 1 million output tokens.
The SPP read
The budget lane closed the way few price increases are ever announced: as a migration. Eight models retired, and the retired endpoints redirect to a model priced several times higher, so a budget buyer's bill rose without any price on any page changing. Redirect-repricing is the meter's quietest lever, and it only works because API buyers bind to model names rather than to rates. Watch for it wherever a vendor prunes a model list: the retirement notice is also the price sheet.
The move
xAI priced Agent Tools API tool calls starting from $5 per 1,000 successful invocations as of November 19, 2025.
The SPP read
Beside the token meter, a second meter appeared denominated in something new: successful tool invocations, billed per thousand calls that worked. Charging only on success moves a unit of risk from buyer to vendor, and it is the first step on this arc that prices what the model accomplished rather than what it consumed. Small in revenue terms, large in signal: a vendor experimenting with success-denominated metering is pricing something other than tokens, which measure effort, not value.
The move
xAI launched Grok 4 Fast on September 19, 2025, pricing input tokens at $0.20 per million tokens (under 128k context) and $0.40 per million tokens (128k or more), with output tokens at $0.50 per million and $1.00 per million respectively.
The SPP read
A budget lane opened an order of magnitude below the flagship, and the vendor's own framing priced intelligence rather than tokens: near-flagship benchmark performance at a small fraction of the rate. Two prices for the same tokens depending on context length made the meter itself tiered. And when the same benchmark performance sells at token rates an order of magnitude apart, the token has stopped being a consistent unit of the thing the buyer is buying. The vendor's framing prices intelligence while its meter still prices tokens, and the distance between those two is where this arc's later moves happen.
The move
Grok 4 API input tokens are priced at $3.00 per 1 million tokens.
The SPP read
A late API entrant priced its flagship at the going flagship rate, matching the incumbent workhorse to the dollar. Entering at parity rather than under it says the vendor is selling capability membership, not a discount, and it marks the moment this arc joins the metered market it will spend the next year renegotiating.
Read revised Sep 16, 2026Reason: reads carry the shape; the price points stay in the move (Chris, 2026-09-15)
A late API entrant priced its flagship at the going flagship rate, three dollars in and fifteen out, matching the incumbent workhorse to the dollar. Entering at parity rather than under it says the vendor is selling capability membership, not a discount, and it marks the moment this arc joins the metered market it will spend the next year renegotiating.
The move
Hours after xAI released Grok 3, X raised the price of Premium+, the subscription tier carrying access to xAI's latest model, from $22 to $40 per month in the U.S.
The SPP read
Hours after the flagship model shipped, the subscription plan carrying it nearly doubled in price. Pricing the carrier rather than the model kept the model's own price page clean while raising what access costs, and the same launch window brought a standalone Grok subscription, reported at the time rather than posted, which marks the start of Grok's commercial life outside the platform. When a model's access price lives in another product's plan, every model launch is a repricing option on that plan, and this one was exercised within hours.
Read revised Sep 15, 2026Reason: reads carry the shape; the price points stay in the move (Chris, 2026-09-15)
Hours after the flagship model shipped, the subscription tier carrying it went from $22 to $40 a month.
The move
X launched a free tier of Grok on December 6, 2024, allowing non-premium users to ask up to 10 questions every two hours, with limits of three image analyses and four image generations per day.
The SPP read
The arc opens with a flip that looks like generosity and functions as instrumentation: a paid-only assistant went free for every user on the platform, with a bounded allowance metering how much free anyone gets and the paid tiers keeping the higher limits. A free tier with an explicit bound is pricing already at work. The bound converts free users into a measured population, and the allowance boundary becomes the upsell line that every later move on this arc renegotiates.
Planning a move like one on this arc, or countering one xAI just made? Talk to a pricing expert before it ships: describe the move, and a pricing architect reads it against your own licensing, packaging, and pricing.
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Primary sources behind the xAI arc, dated.
| Date | Source | Record |
|---|---|---|
| docs.x.ai | primary ↗ | |
| x.ai | primary ↗ · archived | |
| x.ai | primary ↗ · archived | |
| docs.x.ai | primary ↗ · archived | |
| docs.x.ai | primary ↗ · archived | |
| 2025 | ||
| x.ai | primary ↗ · archived | |
| x.ai | primary ↗ · archived | |
| apidog.com | primary ↗ · archived | |
| TechCrunch | primary ↗ · archived | |
| 2024 | ||
| forbes.com | primary ↗ · archived | |
Chris Mele
Ranked #1 on OpenView’s list of B2B SaaS pricing experts. Every read on this page is written by a pricing architect, never drafted by a model, backed by a team that has held CFO, CPO, and CIO seats inside software companies.
The claims ledger and citability gate do the heavy lifting on sourcing. The expert makes the calls only humans can: what a move actually changes under its label, and what it signals for the vendors around it.
Read more about Chris →Want this arc read against your own pricing architecture?
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