Claude Sonnet 4 vs Gemini 2.5 Pro
Gemini 2.5 Pro: 57.6% average across five Vision Evals tasks (#42 of 65 models). Claude Sonnet 4 is deprecated and was not run through Roboflow's Vision Evals, so there is no head-to-head score.
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Claude Sonnet 4 is deprecated and can no longer be run. Details and evals are still available on its model page.
Claude Sonnet 4 vs Gemini 2.5 Pro Comparison Table
Evals updated October 26, 2026Pricing updated November 1, 2026
| Property | Claude Sonnet 4 | Gemini 2.5 Pro |
|---|---|---|
| Organization | Anthropic | |
| Category | closed | closed |
| Modality | multimodal | multimodal |
| Release Date | May 2025 | Jun 2025 |
| Context Window | 1.0M | 1.0M |
| Parameters | Unknown | Unknown |
| License | Proprietary | Proprietary |
| Commercial use | commercial use per vendor terms | commercial use per vendor terms |
| Pricing per 1M tokens | ||
| Input $/1M | No published price | $1.25 |
| Output $/1M | No published price | $10.00 |
| Vision Tasks | ||
| Captioning | Supported | Demo |
| Classification | Supported | Demo |
| Object Detection | Supported | Demo |
| OCR | Supported | Demo |
| Visual Question Answering | Supported | Demo |
| Model Features | ||
Both support 3 more features | ||
Vision Evalsground-truth scores across 5 vision tasks, pooled at low effort | ||
| Overall | Deprecated | 57.6% |
| Avg cost / sample | – | $0.0051 |
| Avg speed / sample | – | 6.83s |
| By task | ||
| Object Detection | – | 33.7% |
| Counting | – | 52.7% |
| Identification | – | 93.8% |
| OCR (low) | – | 65.2% |
| by category |
| |
| OCR (high) | – | 64.6% |
| by category |
| |
| Reasoning (low) | – | 42.4% |
| Reasoning (high) | – | 62.3% |
Claude Sonnet 4 vs Gemini 2.5 Pro: Overview
Claude 4 Sonnet, released by Anthropic in May 2025, is the mid-tier model in the Claude 4 family, designed to balance capability, cost, and speed. It is multimodal, accepting both text and images, and extends beyond prior versions with improved “computer use” support, allowing API-driven interaction with desktop-like interfaces. By default, it supports 200,000 tokens of context, but as of August 2025, it also offers a 1 million-token context window in public beta—making it one of the most context-capable models available for processing entire codebases or large document sets in a single request.
Sonnet 4 is significantly cheaper than the flagship Opus while still demonstrating strong reasoning, coding, and instruction-following ability with reduced hallucinations. Its extended context capabilities and lower latency make it well-suited for enterprise-scale knowledge management, software development, research assistants, and productivity automation where both cost efficiency and high reliability are essential.
Gemini 2.5 Pro, released on June 17, 2025, is Google DeepMind’s most capable model in the Gemini 2.5 family, optimized for deep reasoning, coding, and complex multimodal tasks. It accepts text, images, audio, video, and PDFs as input and outputs text. The model supports 1 million input tokens with an output capacity of up to 65K tokens, enabling large-scale comprehension of datasets, codebases, and technical documents. Its training knowledge extends to January 2025.
It supports structured outputs, function calling, code execution, search grounding, and URL context, making it well-suited for enterprise, STEM, and developer workflows. However, it does not currently support image or audio generation in its stable release, and its higher computational cost and latency make it less efficient than Flash or Flash-Lite. It is available via the Gemini API, Google AI Studio, and Vertex AI.