Claude Sonnet 5.5 vs Grok 4.7
Detailed technical comparison between Claude Sonnet 5.5 (Anthropic) and Grok 4.7 (xAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
Claude Sonnet 5.5
1,000,000 tokensTie
Equal CapabilityTie
Equal SpeedTie
Equal PricingClaude Sonnet 5.5
Claude Sonnet 5.5 is an advanced artificial intelligence model engineered by Anthropic. Tailored for complex multi-step reasoning, programming synthesis, and extended document comprehension, Claude Sonnet 5.5 represents a key architectural iteration in the Anthropic model family. First released in 2026-09-28, it serves enterprise developers, research teams, and autonomous system architects requiring strict instruction compliance. Featuring an input capacity of 1,000,000 tokens (approximately 1,333 words), Claude Sonnet 5.5 processes multi-file code repositories, lengthy technical reports, and complex prompts in a single inference call.
Grok 4.7
Grok 4.7 is an advanced artificial intelligence model engineered by xAI. Tailored for complex multi-step reasoning, programming synthesis, and extended document comprehension, Grok 4.7 represents a key architectural iteration in the xAI model family. First released in 2026-09-21, it serves enterprise developers, research teams, and autonomous system architects requiring strict instruction compliance. Featuring an input capacity of 500,000 tokens (approximately 667 words), Grok 4.7 processes multi-file code repositories, lengthy technical reports, and complex prompts in a single inference call.
Technical Specifications
🏆 = Superior Spec| Specification | Claude Sonnet 5.5 | Grok 4.7 |
|---|---|---|
| Provider | Anthropic | xAI |
| Context Window | 1,000,000 tokens🏆 | 500,000 tokens |
| Agent Suitability | Not yet benchmarked | Not yet benchmarked |
| Time to First Token (TTFT) | No public TTFT data | No public TTFT data |
| Deployment Model | managed api | managed api |
| Production Stability | Beta Access (est.) | Stable GA (est.) |
| API Available | Yes | Yes |
| Released Date | 2026-09-28 | 2026-09-21 |
API Pricing Comparison
Input Price per Million Tokens
Claude Sonnet 5.5
$2.00
Grok 4.7
$2.00
Output Price per Million Tokens
Claude Sonnet 5.5
$10.00
Grok 4.7
$6.00
💡 Cost Ratio: Both models offer identical input token pricing ($2.00 / MTok).
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Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Standardized Scores (0–100%)Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.
Claude Sonnet 5.5 Quirks & Gotchas
No developer gotchas reported.
Grok 4.7 Quirks & Gotchas
No developer gotchas reported.
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