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xAI · 2026-03-31

Grok 4.20 Multi-Agent pricing

Grok 4.20 Multi-Agent is a variant of SpaceXAI’s Grok 4.20 designed for collaborative, agent-based workflows.

Prices from OpenRouter’s models API, updated October 29, 2026

Input$1.25per 1M tokens
Output$2.50per 1M tokens
Cached input$0.2084% off input
Context2Mvision · reasoning

What Grok 4.20 Multi-Agent costs a month

WorkloadStandard
Support chatbot: 1,000 chats a day, 1,500 tokens in, 400 out$86.25
Daily summaries: 10,000 a day, 3,000 tokens in, 300 out$1,350
Coding agent: 400 calls a day, 60,000 tokens in (80% cached), 2,000 out$355

30 days. Cached input billed at the cache-read price. Use your own numbers.

Cheaper models with a similar context window

ModelProviderInput /1MOutput /1MCache read /1MContextChatbot, per month*
Extractscaledown$0.04$0–1M$1.80
Summarizescaledown$0.04$0–1M$1.80
Nex-N2.5-Mininex-agi$0.025$0.10$0.0025262K$2.33
GLM 5.3 FlashZ.ai$0.046$0.074$0.031.05M$2.95
Qwen3.7 FlashAlibaba Qwen$0.03$0.13$0.0061M$2.91

* Support chatbot: 1,000 chats a day, 1,500 tokens in, 400 out, 30 days, no caching. Prices in US dollars per 1M tokens.

Cheaper isn’t automatically as good. Glow’s GlowBench scores models on your kind of task before suggesting a swap.

Other Grok models

ModelInput /1MOutput /1MCache read /1MContextChatbot, per month*
Grok 4.7$2$6$0.50500K$162
Grok 4.6$2$6$0.50500K$162
Grok 4.5$2$6$0.30500K$162
Grok Build 0.1$1$2$0.20256K$69.00
Grok 4.3$1.25$2.50$0.201M$86.25
Grok 4.20$1.25$2.50$0.202M$86.25

* Support chatbot: 1,000 chats a day, 1,500 tokens in, 400 out, 30 days, no caching. Prices in US dollars per 1M tokens.

Related

Grok 4.20 Multi-Agent: questions

How much does Grok 4.20 Multi-Agent cost?

$1.25 per 1M input tokens and $2.50 per 1M output tokens, with cached input at $0.20. A 1,000-token prompt with a 500-token answer costs about $0.0025.

What is Grok 4.20 Multi-Agent’s context window?

2,000,000 tokens, with up to 1,800,000 output tokens per response.

Is there a cheaper alternative to Grok 4.20 Multi-Agent?

Extract costs $0.04 in and $0 out per 1M tokens with a similar context window. Whether it matches Grok 4.20 Multi-Agent’s quality depends on the task: test it on your own prompts (Glow’s GlowBench does this per task).

Know what each model really costs you.

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