| Signal | Claude Opus 4.5 | Delta | Grok 4.20 Beta |
|---|---|---|---|
Capabilities | 100 | -- | |
Benchmarks | 86 | +7 | |
Pricing | 25 | +19 | |
Context window size | 84 | -16 | |
Recency | 100 | -- | |
Output Capacity | 80 | +60 | |
| Overall Result | 3 wins | of 6 | 1 wins |
27
days ranked higher
2
days
1
days ranked higher
Anthropic
xAI
Grok 4.20 Beta saves you $1250.00/month
That's $15000.00/year compared to Claude Opus 4.5 at your current usage level of 100K calls/month.
| Metric | Claude Opus 4.5 | Grok 4.20 Beta | Winner |
|---|---|---|---|
| Overall Score | 90 | 86 | Claude Opus 4.5 |
| Rank | #9 | #18 | Claude Opus 4.5 |
| Quality Rank | #9 | #18 | Claude Opus 4.5 |
| Adoption Rank | #9 | #18 | Claude Opus 4.5 |
| Parameters | -- | -- | -- |
| Context Window | 200K | 2000K | Grok 4.20 Beta |
| Pricing | $5.00/$25.00/M | $2.00/$6.00/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 100 | Claude Opus 4.5 |
| Benchmarks | 86 | 80 | Claude Opus 4.5 |
| Pricing | 25 | 6 | Claude Opus 4.5 |
| Context window size | 84 | 100 | Grok 4.20 Beta |
| Recency | 100 | 100 | Claude Opus 4.5 |
| Output Capacity | 80 | 20 | Claude Opus 4.5 |
Our composite score (0–100) combines six weighted signals: benchmark performance (25%), pricing efficiency (25%), context window size (15%), model recency (15%), output capacity (10%), and capability versatility (10%). Here's what the scores mean for these two models:
Scores 90/100 (rank #9), placing it in the top 97% of all 290 models tracked.
Scores 86/100 (rank #18), placing it in the top 94% of all 290 models tracked.
With only a 5-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.
Grok 4.20 Beta offers 73% better value per quality point. At 1M tokens/day, you'd spend $120.00/month with Grok 4.20 Beta vs $450.00/month with Claude Opus 4.5 - a $330.00 monthly difference.
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.
Code generation & review
Higher benchmark score (0/100) indicates stronger performance on coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Faster response time (speed score 0/100) is critical for user-facing chat. Grok 4.20 Beta also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (2000K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($6.00/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (90/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Claude Opus 4.5 has a moderate advantage with a 4.700000000000003-point lead in composite score. It wins on more signal dimensions, but Grok 4.20 Beta has specific strengths that could make it the better choice for certain workflows.
Best for Quality
Claude Opus 4.5
Marginally better benchmark scores; both are excellent
Best for Cost
Grok 4.20 Beta
73% lower pricing; better value at scale
Best for Reliability
Claude Opus 4.5
Higher uptime and faster response speeds
Best for Prototyping
Claude Opus 4.5
Stronger community support and better developer experience
Best for Production
Claude Opus 4.5
Wider enterprise adoption and proven at scale
by Anthropic
| Capability | Claude Opus 4.5 | Grok 4.20 Beta |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Anthropic
xAI
Grok 4.20 Beta saves you $28.20/month
That's 72% cheaper than Claude Opus 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.
| Parameter | Claude Opus 4.5 | Grok 4.20 Beta |
|---|---|---|
| Context Window | 200K | 2M |
| Max Output Tokens | 64,000 | -- |
| Open Source | No | No |
| Created | Nov 24, 2025 | Mar 12, 2026 |
Claude Opus 4.5 scores 90/100 (rank #9) compared to Grok 4.20 Beta's 86/100 (rank #18), giving it a 5-point advantage. Claude Opus 4.5 is the stronger overall choice, though Grok 4.20 Beta may excel in specific areas like cost efficiency.
Claude Opus 4.5 is ranked #9 and Grok 4.20 Beta is ranked #18 out of 290+ AI models. Rankings use a composite score combining benchmark performance (25%), pricing (25%), context window (15%), recency (15%), output capacity (10%), and versatility (10%). Scores update hourly.
Grok 4.20 Beta is cheaper at $6.00/M output tokens vs Claude Opus 4.5's $25.00/M output tokens - 4.2x more expensive. Input token pricing: Claude Opus 4.5 at $5.00/M vs Grok 4.20 Beta at $2.00/M.
Grok 4.20 Beta has a larger context window of 2,000,000 tokens compared to Claude Opus 4.5's 200,000 tokens. A larger context window means the model can process longer documents and conversations.