DeepSeek-V4 vs GPT-5.5 vs Opus 4.7: Three Flagship Models Clash in April 2026 68

In April 2026, three top-tier models—DeepSeek, Claude, and GPT—were unveiled in succession. DeepSeek-V4 focuses on long context and low cost, Claude Opus 4.7 specializes in coding and logical reasoning, while GPT-5.5 offers a relatively balanced overall capability. This article compares these three models across three dimensions—coding, reasoning, and pricing—for your reference.

📊 Core Parameters and Capability Comparison

🧐 Detailed Analysis of Each

DeepSeek-V4: Long Context and Cost-Effectiveness

1M context is its core differentiator. If you need to process large volumes of financial reports, technical documents, or meeting transcripts in one go, V4 is a suitable choice. Its coding (SWE-Bench 80.6%) and math reasoning capabilities are no slouch, approaching GPT-5.5 in some scenarios. The input price is about 1/20 of GPT-5.5, offering significant cost advantages for enterprises with high-frequency API calls. Its shortcomings lie in multimodal (video/audio understanding) and complex creative writing, where it falls slightly behind Claude and GPT.

Claude Opus 4.7: Coding and Engineering

It reaches 87.6% on SWE-Bench Verified, significantly higher than other models. It can not only write code but also self-correct and plan, capable of handling demanding tasks like financial-grade code. On the vision side, it supports 3.75-megapixel image input, able to recognize complex chemical molecular structures or design blueprints. It pushes back against incorrect user viewpoints in technical discussions, more like an experienced colleague. Downsides: high price, no open-source version.

GPT-5.5: Relatively Balanced Overall Capability

It maintains 90+ scores on comprehensive leaderboards like MMLU-Pro, with stable performance in knowledge breadth and depth. The toolchain (DALL-E, Voice Mode) and third-party plugin ecosystem are relatively mature. But the price is too steep—for most ordinary applications, the performance premium may not be worth it.

💡 How to Choose

Choose DeepSeek-V4:

• You need to handle ultra-long documents, such as legal dossiers, entire novels, or massive logs

• You are a developer or startup sensitive to API costs, or require private deployment

• You need a model with strong Chinese language capability and fast response

Choose Claude Opus 4.7:

• Your core scenario is writing code, software development, or complex logical reasoning

• You need strong instruction-following or visual analysis capabilities, such as analyzing design diagrams

• You have sufficient budget and want the highest-quality code output currently available

Choose GPT-5.5:

• You need a general-purpose assistant to handle complex problems across domains

• Your workflow relies heavily on the Microsoft/Azure ecosystem

• You need to process multimodal content like audio and video