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Grok 4.20 Multi-Agent vs Grok 4.5

Signal-by-Signal Comparison
SignalGrok 4.20 Multi-AgentDeltaGrok 4.5
Capabilities
83
-17
100
Benchmarks
86
--
86
Pricing
98
+4
94
Context window size
90
+9
81
Recency
100
--
100
Output Capacity
20
--
20
Overall Result
2 wins
of 6
1 wins
Grok 4.20 Multi-Agent wins 2 of 6 signals

Score History

Score History (15 data points)
Grok 4.20 Multi-AgentGrok 4.5
Grok 4.20 Multi-Agent

87.4

current score

Leader

Grok 4.5

right now

Grok 4.5

87.8

current score

LMMarketCap.com
Interactive Price Comparison
100Kcalls/month
1,000tokens (~1,333 chars)
500tokens (~667 chars)

Grok 4.20 Multi-Agent

xAI

Best Value
Per request$0.002500
Daily$8.33
Monthly$250.00
Annual$3000.00

Grok 4.5

xAI

Per request$0.005000
Daily$16.67
Monthly$500.00
Annual$6000.00

Grok 4.20 Multi-Agent saves you $250.00/month

That's $3000.00/year compared to Grok 4.5 at your current usage level of 100K calls/month.

50% cheaper
Choose Grok 4.20 Multi-Agent for cost optimization

Grok 4.20 Multi-Agent pricing:
Input:$1.25/M tokens
Output:$2.50/M tokens
Grok 4.5 pricing:
Input:$2.00/M tokens
Output:$6.00/M tokens
Grok 4.20 Multi-Agent

xAI

87

Composite Score

Winner
Grok 4.5

xAI

88

Composite Score

Signal-by-Signal Comparison
MetricGrok 4.20 Multi-AgentGrok 4.5Winner
Overall Score
87
88
Grok 4.5
Rank#23#22
Grok 4.5
Quality Rank#23#22
Grok 4.5
Adoption Rank#23#22
Grok 4.5
Parameters------
Context Window2000K500K
Grok 4.20 Multi-Agent
Pricing$1.25/$2.50/M$2.00/$6.00/M--
Signal Scores
Capabilities
83
100
Grok 4.5
Benchmarks
86
86
Grok 4.20 Multi-Agent
Pricing
98
94
Grok 4.20 Multi-Agent
Context window size
90
81
Grok 4.20 Multi-Agent
Recency
100
100
Grok 4.20 Multi-Agent
Output Capacity
20
20
Grok 4.20 Multi-Agent
Benchmark Head-to-Head(11 benchmarks)
Grok 4.20: 011 tiesGrok 4.5: 0
Grok 4.20
Grok 4.5
Normalized 0-100%
MMLU
91.5%91.5%
MMLU-Pro
83.5%83.5%
GPQA Diamond
82%82%
MATH-500
95%95%
HumanEval
95.5%95.5%
SWE-bench Verified
70%70%
AIME 2024
88%88%
IFEval
91%91%
BBH
90%90%
Arena Elo
14621462
LiveBench
73%73%
Benchmark Interpretation

Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.

Grok 4.20 Multi-AgentElite Tier

Scores 87/100 (rank #23), placing it in the top 92% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100
Grok 4.5Elite Tier

Scores 88/100 (rank #22), placing it in the top 93% of all 290 models tracked.

Raw Quality0/100
Cost Efficiency0/100
Speed0/100

With only a 0-point gap, these models are in the same performance tier. The practical difference in output quality is minimal - your choice should depend on pricing, latency requirements, and specific feature needs.

When to Use Each Model

Choose Grok 4.20 Multi-Agent when you need:

  • High-volume production workloads where API costs must be minimized
  • Processing long documents or large codebases (2000K token context)
  • Step-by-step reasoning and chain-of-thought problem solving

Choose Grok 4.5 when you need:

  • Agentic applications using tool/function calling
  • Step-by-step reasoning and chain-of-thought problem solving
Cost-Performance Analysis
Grok 4.20 Multi-AgentBest Value
Input cost$1.25/M tokens
Output cost$2.50/M tokens
Cost per quality point$0.043
Est. monthly (1M tokens/day)$56.25
Grok 4.5
Input cost$2.00/M tokens
Output cost$6.00/M tokens
Cost per quality point$0.091
Est. monthly (1M tokens/day)$120.00

Grok 4.20 Multi-Agent offers 53% better value per quality point. At 1M tokens/day, you'd spend $56.25/month with Grok 4.20 Multi-Agent vs $120.00/month with Grok 4.5 - a $63.75 monthly difference.

Latency & Speed
Grok 4.20 Multi-AgentFaster
Speed score0/100
Grok 4.5
Speed score0/100

Both models have comparable response speeds. For most applications, the latency difference is negligible.

When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.

Example Use Cases

Code generation & review

Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring

Grok 4.20 Multi-Agent

Customer support chatbot

Suitable for user-facing chat with competitive response times. Grok 4.20 Multi-Agent also offers lower per-token costs for high-volume support

Grok 4.20 Multi-Agent

Long document analysis

Larger context window (2000K tokens) can process longer documents, contracts, and research papers in a single pass

Grok 4.20 Multi-Agent

Batch data extraction

Lower output pricing ($2.50/M) reduces costs when processing thousands of records daily

Grok 4.20 Multi-Agent

Creative writing & content

Higher overall composite score (88/100) correlates with better nuance, coherence, and style in long-form content

Grok 4.5

Image understanding & OCR

Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly

Grok 4.20 Multi-Agent
Which Should You Choose?
Our recommendation:
Grok 4.5

Grok 4.20 Multi-Agent and Grok 4.5 are extremely close in overall performance (only 0.3999999999999915 points apart). Your best choice depends entirely on which specific strengths matter most for your use case.

by xAI

  • Choose for Quality - Marginally better benchmark scores; both are excellent
  • Choose for Cost - 53% lower pricing; better value at scale
  • Choose for Reliability - Higher uptime and faster response speeds
  • Choose for Prototyping - Stronger community support and better developer experience
  • Choose for Production - Wider enterprise adoption and proven at scale
Grok 4.5
Recommended

by xAI

Consider for specialized use cases.

Capability Comparison
CapabilityGrok 4.20 Multi-AgentGrok 4.5
Vision (Image Input)
Function Callingdiffers
Streaming
JSON Mode
Reasoning
Web Search
Image Output
Monthly Cost Calculator
1,000tokens (600 in / 400 out)
100requests/day (3,000/month)

Grok 4.20 Multi-Agent

xAI

Best Value
$5.25
estimated monthly cost

Grok 4.5

xAI

$10.80
estimated monthly cost

Grok 4.20 Multi-Agent saves you $5.55/month

That's 51% cheaper than Grok 4.5 at 1,000 tokens/request and 100 requests/day.

Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.

Parameters & Context
ParameterGrok 4.20 Multi-AgentGrok 4.5
Context Window2M500K
Max Output Tokens----
Open SourceNoNo
CreatedMar 31, 2026Jul 8, 2026
Last updated: 40m ago

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