Grok 4.3 (batch) API Pricing
xAI · context window 1M · prices updated 2026-09-15
Where Grok 4.3 (batch) sits on price
At $2.00 per million output tokens, Grok 4.3 (batch) is a mid tier model — right at the median output price of $2.08, which puts it cheaper than 53% and pricier than 47% of the models we track. It sits 2th cheapest of the 7 xAI models we track. Output is only 2.0× the input price, an unusually flat spread: long prompts hurt about as much as long answers, so prompt size is where the savings are.
Cached input is 84% cheaper. On an input-heavy workload you need roughly a 30% cache-hit rate to take 25% off the input line — reachable for chatbots and agents that resend the same system prompt and history.
What real workloads cost on Grok 4.3 (batch)
These three workloads are the ones teams actually run on a mid-priced model — a $2.00/1M model is not bought for the same job as one ten times the price.
| Workload | Per request | Per month |
|---|---|---|
| Support chatbot — 500 conversations/day (5K in / 1.4K out) Conversation history re-sent each turn — the classic prompt-caching win. | $0.0078 | $117 |
| Document pipeline — 10K docs/day (3K in / 500 out) Batch-friendly: no user waiting, so a ~50% batch discount usually applies. | $0.004 | $1200 |
| Long-context analysis — 200 runs/day (250K in / 4K out) Only possible on large-context models; input cost is nearly the whole bill. | $0.258 | $1548 |
Model your exact traffic in the API cost calculator — it preloads Grok 4.3 (batch) with caching and batch options.
Grok 4.3 (batch) price history
Grok 4.3 (batch)'s price has not moved since we began tracking it on Sep 4, 2026 — 11 days of stability in a market where 78 of the 334 models we track have repriced over the same period. xAI's lineup has held steady across the board.
Change-points from our daily price snapshots (tracking since Sep 4, 2026; intraday moves between snapshots are not captured).
Grok 4.3 (batch) vs Qwen3.6 27B
The closest-priced alternative from another vendor is Qwen3.6 27B (Alibaba (Qwen)) — priced within a rounding error on output, with $0.7 less per million input tokens. When two models land this close on price, the decision is quality on your own workload, not the price sheet: run 50 real requests through both and compare.
See Qwen3.6 27B pricing →Cheaper alternatives
More xAI models
Frequently asked questions
› How much does the Grok 4.3 (batch) API cost?
Grok 4.3 (batch) costs $1.00 per million input tokens and $2.00 per million output tokens, with cached input at $0.16 per million (84% cheaper). That works out to roughly 500,000 output tokens per dollar.
› What does the support chatbot workload cost on Grok 4.3 (batch)?
Support chatbot — 500 conversations/day (5K in / 1.4K out) costs about $0.0078 per request and $117 per month on Grok 4.3 (batch). Conversation history re-sent each turn — the classic prompt-caching win.
› What does it cost to fill Grok 4.3 (batch)'s 1M context window?
Sending 1M of input in a single request costs $1.00 at $1.00 per million tokens — before any output. With prompt caching that same fill drops to about $0.16 on repeat requests. This is why large context windows are cheap to advertise and expensive to actually use.
› Is Grok 4.3 (batch) worth the price?
Grok 4.3 (batch) sits in the middle of the market (2 of 7 by price within xAI). The honest test is a routing experiment: send the same 200 real requests to this model and to a tier below, and compare failure rate against the price gap — most teams find a majority of traffic never needed the pricier model.