Claude Opus 4.6 vs Grok 4.6
Grok 4.6: 59.1% average across five Vision Evals tasks (#42 of 69 models). We have not run Claude Opus 4.6 through Roboflow's Vision Evals, so there is no head-to-head score. Run both on your own image below.
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Claude Opus 4.6 vs Grok 4.6 Comparison Table
Evals updated November 12, 2026Pricing updated November 13, 2026
| Property | Claude Opus 4.6 | Grok 4.6 |
|---|---|---|
| Organization | Anthropic | SpaceXAI |
| Category | closed | closed |
| Modality | multimodal | multimodal |
| Release Date | Feb 2026 | Aug 2026 |
| Context Window | 1.0M | 500K |
| Parameters | Unknown | Unknown |
| License | Proprietary | Proprietary |
| Commercial use | commercial use per vendor terms | commercial use per vendor terms |
| Pricing per 1M tokens | ||
| Input $/1M | $5.00 | $2.00 |
| Output $/1M | $25.00 | $6.00 |
| Vision Tasks | ||
| Model Features | ||
Both support 3 more features | ||
Vision Evalsground-truth scores across 5 vision tasks, pooled at low effort | ||
| Overall | Not evaluated | 59.1% |
| Avg cost / sample | – | $0.011 |
| Avg speed / sample | – | 19.32s |
| By task | ||
| Object Detection (low) | – | 23.8% ±2.8, Mean of 3 runs, range 20.2 to 25.9 |
| Object Detection (high) | – | 24.0% ±1.0, Mean of 3 runs, range 23.1 to 25.1 |
| Counting (low) | – | 65.8% ±4.1, Mean of 3 runs, range 62.2 to 70.3 |
| Counting (high) | – | 56.8% ±1.4, Mean of 3 runs, range 55.4 to 58.1 |
| Identification (low) | – | 84.4% ±3.1, Mean of 3 runs, range 81.3 to 87.5 |
| Identification (high) | – | 85.4% ±1.6, Mean of 3 runs, range 84.4 to 87.5 |
| OCR (low) | – | 60.6% |
| by category |
| |
| OCR (high) | – | 61.2% |
| by category |
| |
| Reasoning (low) | – | 61.1% ±1.3, Mean of 3 runs, range 59.6 to 62.3 |
| Reasoning (high) | – | 63.8% ±2.0, Mean of 3 runs, range 62.3 to 66.2 |
Claude Opus 4.6 vs Grok 4.6: Overview
Claude Opus 4.6 is the flagship large language model from Anthropic, released on 2026-02-05 for advanced reasoning, complex coding, and enterprise agent workflows. It supports text and image inputs via API, offers a 200K-token standard context window with a 1M-token beta option, and enables outputs up to 128K tokens, with adaptive reasoning and context compaction for sustained tasks.
As of 2026-02-17, Anthropic also released Claude Sonnet 4.6, extending the 1M-token context window to a broader tier. Opus remains positioned for maximum depth and benchmark performance, while Sonnet 4.6 brings long-context capability to more cost- and latency-sensitive production use cases.
Grok 4.6 is a proprietary reasoning model from xAI aimed at long-running agentic workflows, coding, and knowledge work. It accepts text and image input and returns text, with a 500,000 token context window and a knowledge cutoff of February 1, 2026. The model exposes an adjustable reasoning budget with low, medium, high, and xhigh settings, where high is the default, and it supports function calling, structured outputs, web and X search, and code execution as documented tool behaviors. Its visual capability covers interpreting images supplied alongside text prompts, which places it in the visual question answering and document understanding family, and it can also return object detection boxes as text coordinates when prompted.
xAI characterizes Grok 4.6 as the result of an extended post-training run over the Grok 4.5 lineage rather than a new pretrained base. The described recipe combines curated model-generated reasoning and technical data, engineering data, a revised optimizer, regenerated supervised fine-tuning trajectories, and reinforcement learning across agent environments spanning knowledge work, coding, kernel optimization, web development, and computer-aided design. Parameter count and architecture specifics are not disclosed.