Grok 4.20 Multi-Agent is $28 cheaper per 1M input tokens (93.3% lower; 15x difference).
API cost decision in 10 seconds
Claude Opus 4.6 (Fast) vs Grok 4.20 Multi-Agent
Pick Grok 4.20 Multi-Agent when budget and context both matter.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Grok 4.20 Multi-Agent when budget and context both matter.
On the standard 1M input plus 500K output workload, Grok 4.20 Multi-Agent is estimated at $5 vs $105 for Claude Opus 4.6 (Fast), saving $100 (95.2% lower).
Cost-first pickGrok 4.20 Multi-Agent
Context-first pickGrok 4.20 Multi-Agent
Sample savings$10095.2%
10x traffic gap$1000
Grok 4.20 Multi-Agent is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $1000. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Grok 4.20 Multi-Agent stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Claude Opus 4.6 (Fast) | Grok 4.20 Multi-Agent |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Grok 4.20 Multi-Agent | $225 | $13 |
| Balanced workload | 1M input + 1M output | Grok 4.20 Multi-Agent | $180 | $8 |
| Output-heavy chatbot | 1M input + 5M output | Grok 4.20 Multi-Agent | $780 | $32 |
Grok 4.20 Multi-Agent is $144 cheaper per 1M output tokens (96% lower; 25x difference).
Grok 4.20 Multi-Agent has 1M more context (2x larger).
Grok 4.20 Multi-Agent is $100 cheaper on the standard workload (95.2% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Grok 4.20 Multi-Agent has the lower input price; Grok 4.20 Multi-Agent has the lower output price; Grok 4.20 Multi-Agent offers the larger context window. For the 1M input plus 500K output sample, Grok 4.20 Multi-Agent is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $105 for Claude Opus 4.6 (Fast) and $5 for Grok 4.20 Multi-Agent.
Choose Claude Opus 4.6 (Fast) when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose Grok 4.20 Multi-Agent when you care most about lower input-token price, lower output-token price, and larger context window.
- On the standard 1M input plus 500K output workload, Grok 4.20 Multi-Agent is estimated at $5 vs $105 for Claude Opus 4.6 (Fast), saving $100 (95.2% lower).
- Grok 4.20 Multi-Agent is $100 cheaper on the standard workload (95.2% lower).
- Grok 4.20 Multi-Agent is $28 cheaper per 1M input tokens (93.3% lower; 15x difference).
- Grok 4.20 Multi-Agent is $144 cheaper per 1M output tokens (96% lower; 25x difference).
- Grok 4.20 Multi-Agent has 1M more context (2x larger).
| Feature | Claude Opus 4.6 (Fast) (Anthropic) | Grok 4.20 Multi-Agent (xAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $30 | $2 |
| Completion Price per 1M tokens | $150 | $6 |
| Sample Workload Cost 1M input + 500K output | $105 | $5 |
| Context Window | 1M | 2M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Grok 4.20 Multi-Agent | On the standard 1M input plus 500K output workload, Grok 4.20 Multi-Agent is estimated at $5 vs $105 for Claude Opus 4.6 (Fast), saving $100 (95.2% lower). |
| High-volume input processing | Grok 4.20 Multi-Agent | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Grok 4.20 Multi-Agent | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Grok 4.20 Multi-Agent | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Claude 3 Haiku can replace Claude Opus 4.6 (Fast) when lower sample workload cost matters most: $0.88.
- Claude 3.5 Haiku can replace Claude Opus 4.6 (Fast) when lower sample workload cost matters most: $2.8.
- Anthropic Claude Haiku Latest can replace Claude Opus 4.6 (Fast) when lower sample workload cost matters most: $3.5.
- Claude Haiku 4.5 can replace Claude Opus 4.6 (Fast) when lower sample workload cost matters most: $3.5.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsAnthropic catalog
Review all tracked Anthropic models before deciding whether this matchup is the right shortlist.
Open Anthropic modelsxAI catalog
Check other xAI models with comparable pricing, context, or release timing.
Open xAI modelsFast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Grok 4.20 Multi-Agent is a variant of xAI’s Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information...