Results by criterion for translation methods

Criteria Google Translate DeepL (Free) Google Gemini (basic prompt) Google Gemini (advanced prompt) Windows Copilot (basic prompt) Windows Copilot (advanced prompt) GPT-4 (basic prompt) GPT-4 (advanced prompt)
Language Pair Specificity ✅ Accurate ✅ Accurate ✅ Accurate ✅ Accurate ✅ Accurate ✅ Accurate ✅ Accurate ✅ Accurate
Contextual Understanding ⚠️ Lacks nuance in complex texts ⚠️ Decent, but not detailed enough ⚠️ General understanding ✅ Best for capturing details ⚠️ Limited in complex contexts ⚠️ Limited, especially in advanced texts ✅ Good, but less contextual than advanced ✅ Best in all cases
Tone and Style ⚠️ Functional, less engaging ⚠️ Neutral, lacks promotional tone ⚠️ Balanced but neutral ✅ Adapts well, engaging or serious as needed ⚠️ Neutral and simple ⚠️ Somewhat neutral ✅ Balanced for most cases ✅ Most adaptable to tone changes
Terminology Consistency ⚠️ Some inconsistency in terms ⚠️ Good, but terms can vary ⚠️ Decent with easy terms ✅ Strong and consistent ⚠️ Inconsistent with technical terms ⚠️ Improved with advanced prompts ✅ Consistent, especially in technical terms ✅ Best across all content types
Accuracy ⚠️ Misses details in complex texts ⚠️ Good, but lacks precision ⚠️ Accurate for basic texts ✅ High accuracy, especially in legal/technical texts ⚠️ Lacks precision in advanced texts ⚠️ Better but still inconsistent ✅ High accuracy for general cases ✅ Best accuracy, handles complex details
Fluency and Readability ⚠️ Can be awkward in long texts ✅ Good for short texts ⚠️ Smooth for basic texts ✅ Very smooth and easy to read ⚠️ Sometimes awkward in long texts ⚠️ Slightly better with advanced prompts ✅ Fluent and easy to read ✅ Best fluency, even in complex texts
Handling Complex Sentences ⚠️ Struggles with long sentences ⚠️ Struggles with complex sentences ⚠️ Handles basic complexity ✅ Excellent for complex sentences ⚠️ Simplifies complex sentences ⚠️ Improved with advanced prompts ✅ Handles moderate complexity well ✅ Best for complex structures
Cultural Adaptation ⚠️ Literal, lacks adaptation ⚠️ Minimal adaptation ⚠️ Basic adaptation ✅ Culturally adapted well ⚠️ Literal translations ⚠️ Better with advanced prompts ✅ Decent adaptation ✅ Best for localization
Tone and Style Consistency ⚠️ Inconsistent across sections ✅ Decent for simple texts ⚠️ Consistent for easy texts ✅ Consistent throughout ⚠️ Inconsistent in longer texts ⚠️ Improved but still inconsistent ✅ Consistent tone for most cases ✅ Best consistency
Error Rate ⚠️ Higher error rate in long texts ⚠️ Minimal errors in short texts ⚠️ Fewer errors, but some issues ✅ Minimal errors in complex texts ⚠️ Moderate errors, especially in long texts ⚠️ Fewer errors but still present ✅ Very few errors in simple prompts ✅ Minimal errors, best overall
Prompt Adaptability ⚠️ Minimal difference in prompts ⚠️ Slight improvement in details ⚠️ Not highly adaptable ✅ Highly adaptable to detailed prompts ⚠️ Simple prompts work best ✅ Better adaptability with advanced prompts ✅ Adapts well to simple prompts ✅ Best adaptability across prompts
Conciseness ⚠️ Can be verbose ⚠️ Slightly verbose in technical texts ⚠️ Generally concise ✅ Concise while preserving details ⚠️ Becomes verbose in complex texts ⚠️ Concise but needs improvement ✅ Concise and clear ✅ Most concise with high detail
Handling of HTML/Formatting ⚠️ Occasional formatting issues ⚠️ Minimal issues ⚠️ Handles basic formatting well ✅ Handles formatting very well ⚠️ Some formatting issues ⚠️ Better with advanced prompts ✅ Manages special characters well ✅ Best for handling formatting
Scalability ⚠️ Inconsistent in long texts ⚠️ Struggles with longer texts ⚠️ Performs well for short content ✅ Consistent across all text sizes ⚠️ Inconsistent for long documents ⚠️ Better with advanced prompts ✅ Handles long texts efficiently ✅ Best for scaling across all cases
Iteration and Refinement ⚠️ Difficult to refine ⚠️ Less responsive to changes ⚠️ Limited refinement ✅ Best for refining based on feedback ⚠️ Not easy to refine results ✅ Better with advanced input ✅ Easy to refine translations ✅ Best for refinement and iteration
Speed and Ease of Use ✅ Near-instant translations for up to 5000 characters, most convenient for general use ⚠️ Accurate but slowed by 1500 character limit, requires splitting longer texts ✅ Fast for up to 5000 characters, similar to Google Translate ✅ Fast, handles longer texts well, good for complex cases ⚠️ Slowed by 1500 character limit, suitable for shorter texts ⚠️ Improved performance with advanced prompt, but hindered by 1500 character limit ✅ Good balance between accuracy, speed, and fluency for moderate complexity ✅ Best performance for both speed and complexity, especially for longer texts