PREVIOUS GROK1M CONTEXTPROMPT CACHINGCONFIGURABLE REASONING
Grok 4.3 API Pricing
Grok 4.3 remains listed on SpaceXAI's pricing page as the cheaper 1M-context Grok option: $1.25/M input, $0.20/M cached input, and $2.50/M output. SpaceXAI's newer 500K-context line, from Grok 4.5 on, lists higher per token.
Input - per 1M tokens
$1.25/M
Previous Grok 4.3 live
Output - per 1M tokens
$2.50/M
Reasoning tokens billed as output live
Cached input
$0.20/M
Prompt cache SpaceXAI row -84%
Effective - agentic blend
$0.558/M
92/8 split - 82% cache
§ 01 / TERMINAL
Run the numbers.
Live calculator pre-loaded with Grok 4.3 rates. After the Grok 4.5 launch, Grok 4.3 remains useful as a cheaper 1M-context option at $1.25/M input, $0.20/M cached input, and $2.50/M output.
$ /mo
Workload split
Prompt cache hit rate
Tokens you can process
—
Words equivalent (English)
—
Effective rate
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§ 02 / SCENARIOS
Real-world presets.
AGENT
Tool-calling agent
$0.051/task
LONG CONTEXT
Research pack synthesis
$0.103/pack
CHAT
Power-user chat
$0.031/turn
RAG
Knowledge base RAG
$0.088/answer
Estimate · grok-tokenizer-estimate · ≈3.85 chars/token Auto-counts as you type
This is a chars-per-token approximation, not a real tokenizer. Actual tokens vary by language, code density, and tool-call overhead — counts are typically ±10–20% off for English prose, more for code or non-Latin scripts. For exact billing, use the vendor's official tokenizer.
Characters 362
Words 64
Tokens (estimated) 94 tokens
Cost as input · uncached $0.00012 USD
Cost as output · uncached $0.00023 USD
Cost as cached input $0.00002 USD
| Model | Input /M | Output /M | Effective blended | Context | Best for |
|---|---|---|---|---|---|
| Grok 4.5 | $2.00 cache $0.30 | $6.00 | $1.04 +86% | 500K | Coding, agents, and knowledge work |
| Grok 4.3 Current | $1.25 cache $0.20 | $2.50 | $0.558 agentic 92/8 | 1M | Lower-cost Grok chat and tools |
| Grok Build 0.1 | $1.00 cache $0.20 | $2.00 | $0.476 −15% | 256K | Dedicated coding workflows |
| Grok 4.20 Multi-Agent (0309) | $1.25 cache $0.20 | $2.50 | $0.558 same | 1M | Pinned long-context agent loops |
| Claude Sonnet 5.5 | $2.00 cache $0.10 | $10.00 | $1.29 +2.3× | 1M | Claude-class coding agents |
| GPT-5.6 Sol | $4.00 cache $0.40 | $20.00 | $2.73 +4.9× · promo | 1.05M | OpenAI frontier workloads |
| DeepSeek V4 Pro | $1.32 cache $0.044 | $3.96 | $0.569 same | 1M | Low-cost reasoning alternative |
Frequently asked.
Grok 4.3 pricing questions, with SpaceXAI token rates separated from workload assumptions.
Q · 01 What is Grok 4.3's API price? +
SpaceXAI still lists
grok-4.3 at $1.25/M input, $0.20/M cached input, and $2.50/M output. The newer 500K-context Groks, from Grok 4.5 on, list higher, so Grok 4.3 remains the cheaper 1M-context option.Q · 02 Does Grok 4.3 support prompt caching? +
Yes. The SpaceXAI pricing page lists cached input at
$0.20/M, versus $1.25/M for fresh input. This page uses an 82% cache-hit assumption only for the effective blend tile.Q · 03 What happened to older Grok slugs? +
SpaceXAI says several older model slugs retired on
2026-05-15 and now redirect to grok-4.3. Requests through those deprecated slugs are billed at Grok 4.3 pricing.Q · 04 Is Batch API cheaper? +
Yes, by 20%. SpaceXAI's pricing page lists
grok-4.3 among four models with a 20% Batch API discount, applied to every token type: $1.00/M input, $0.16/M cached input and $2.00/M output. Batch jobs are queued and most complete within 24 hours. The newer Grok 4.5, 4.6 and 4.7 get no batch discount. This page keeps the headline calculator on standard realtime rates.Q · 05 Are tool calls included in token pricing? +
No. SpaceXAI prices server-side tools separately, for example Web Search and X Search at
$5 / 1k calls. Token usage from those requests is still billed at the selected model rate.Q · 06 How accurate is the tokenizer estimate? +
The widget uses a GPT-class planning estimate of
4.875 characters per token. Exact SpaceXAI billing can vary with language, hidden reasoning tokens, tool use, and cached prompt boundaries.