| Signal | Claude Opus 4.7 | Delta | Grok 4 Fast |
|---|---|---|---|
Capabilities | 100 | -- | |
Benchmarks | 80 | +10 | |
Pricing | 75 | -24 | |
Context window size | 95 | -5 | |
Recency | 100 | +6 | |
Output Capacity | 85 | +11 | |
| Overall Result | 3 wins | of 6 | 2 wins |
Score History
81.4
current score
Claude Opus 4.7
right now
72.5
current score
Anthropic
xAI
Grok 4 Fast saves you $1705.00/month
That's $20460.00/year compared to Claude Opus 4.7 at your current usage level of 100K calls/month.
| Metric | Claude Opus 4.7 | Grok 4 Fast | Winner |
|---|---|---|---|
| Overall Score | 81 | 73 | Claude Opus 4.7 |
| Rank | #32 | #73 | Claude Opus 4.7 |
| Quality Rank | #32 | #73 | Claude Opus 4.7 |
| Adoption Rank | #32 | #73 | Claude Opus 4.7 |
| Parameters | -- | -- | -- |
| Context Window | 1000K | 2000K | Grok 4 Fast |
| Pricing | $5.00/$25.00/M | $0.20/$0.50/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 100 | Claude Opus 4.7 |
| Benchmarks | 80 | 70 | Claude Opus 4.7 |
| Pricing | 75 | 100 | Grok 4 Fast |
| Context window size | 95 | 100 | Grok 4 Fast |
| Recency | 100 | 94 | Claude Opus 4.7 |
| Output Capacity | 85 | 75 | Claude Opus 4.7 |
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.
Scores 81/100 (rank #32), placing it in the top 89% of all 290 models tracked.
Scores 73/100 (rank #73), placing it in the top 75% of all 290 models tracked.
Claude Opus 4.7 has a 9-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.
Grok 4 Fast offers 98% better value per quality point. At 1M tokens/day, you'd spend $10.50/month with Grok 4 Fast vs $450.00/month with Claude Opus 4.7 - a $439.50 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
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Grok 4 Fast 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 ($0.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (81/100) 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 4.7 has a moderate advantage with a 8.900000000000006-point lead in composite score. It wins on more signal dimensions, but Grok 4 Fast has specific strengths that could make it the better choice for certain workflows.
Best for Quality
Claude Opus 4.7
Marginally better benchmark scores; both are excellent
Best for Cost
Grok 4 Fast
98% lower pricing; better value at scale
Best for Reliability
Claude Opus 4.7
Higher uptime and faster response speeds
Best for Prototyping
Claude Opus 4.7
Stronger community support and better developer experience
Best for Production
Claude Opus 4.7
Wider enterprise adoption and proven at scale
by Anthropic
| Capability | Claude Opus 4.7 | Grok 4 Fast |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Anthropic
xAI
Grok 4 Fast saves you $38.04/month
That's 98% cheaper than Claude Opus 4.7 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 4.7 | Grok 4 Fast |
|---|---|---|
| Context Window | 1M | 2M |
| Max Output Tokens | 128,000 | 30,000 |
| Open Source | No | No |
| Created | Apr 16, 2026 | Sep 19, 2025 |
The 9-point score gap (75 vs 66) likely reflects superior code generation quality on standard benchmarks, while the 50x output price difference ($25/M vs $0.50/M) makes Grok 4 Fast economically viable for high-volume applications. With 2x the context window (2M vs 1M tokens), Grok 4 Fast can handle larger codebases in single passes, which is crucial for repository-wide refactoring tasks.
Grok 4 Fast would cost just $5/day for the same 10M output tokens, saving $89,425 annually. However, Claude Opus 4.7's 4.3x larger max output capability (128K vs 30K tokens) means it can generate entire microservices or documentation sets in one shot, potentially reducing the total number of API calls needed by 75%.
Claude Opus 4.7's 128K max output tokens enable generating complete SDKs or API implementations that would require 5 separate Grok 4 Fast calls (30K limit). For enterprise teams building code generators or transpilers where output quality directly impacts developer productivity, the $24.50/M premium could be offset by reducing debugging time on a 100-developer team by just 6 minutes monthly.
A codebase analysis system processing 100M input tokens daily would cost $500/day with Claude Opus 4.7 versus $20/day with Grok 4 Fast. This 25x difference incentivizes using Grok 4 Fast for the initial parsing and filtering stages, then routing only the most complex 2% of queries to Claude Opus 4.7 for its potentially higher reasoning quality on edge cases.
While Grok 4 Fast's 2M context doubles Claude's 1M tokens, Claude Opus 4.7's 128K output limit lets it generate comprehensive test suites or documentation that would overflow Grok's 30K limit by 4.3x. For monorepo migrations where you need to output transformed versions of multiple large files simultaneously, Claude Opus 4.7's massive output buffer prevents the fragmentation issues that would require stitching together multiple Grok 4 Fast responses.
The 9-point score advantage (75 vs 66) suggests Grok 4 Fast generates measurably better code, while costing 98% less per output token ($0.50 vs $25 per million). Unless your use case specifically requires Claude Opus 4.7's unique 128K output capacity for generating massive code artifacts, Grok 4 Fast's superior performance-per-dollar ratio makes it the rational choice for teams processing over 40K output tokens daily.