Comprehensive Comparison of the Most Powerful AI Models in 2026: GPT-5.4 vs Claude Opus 4.6 vs Gemini 3.1 vs Grok 4 vs DeepSeek V4
Comprehensive Guide: Detailed comparison between the five major AI models in 2026 — data from multiple benchmarks, updated pricing, and analysis of different use cases - Discover the essential details and comparisons you need.
AI DayaHimour Team
April 2, 2026
Development of Major Models in Early 2026
During a short period in early 2026, four companies — OpenAI, Anthropic, Google DeepMind, and DeepSeek — launched their new language models. This review aims to provide a comprehensive comparison of each model’s performance based on multiple benchmarks, with updated pricing data.
Overview: The Five Main Models
| Model | Company | Release Date | Context Window | Price (Million Tokens / Input / Output) |
|---|---|---|---|---|
| GPT-5.4 | OpenAI | March 5, 2026 | 128K | $2.50 / $15 |
| Claude Opus 4.6 | Anthropic | March 8, 2026 | 1M | $15 / $75 |
| Gemini 3.1 Pro | Google DeepMind | February 19, 2026 | 1M+ | $2 / $12 |
| Grok 4 | xAI | February 2026 | 256K | $0.20 / $0.50 |
| DeepSeek V4 Leaks | DeepSeek | Expected late 2026 | 128K (expected) | Open source |
Complete Benchmark Table
| Benchmark | GPT-5.4 | Claude Opus 4.6 | Gemini 3.1 Pro | Grok 4 | DeepSeek V4 |
|---|---|---|---|---|---|
| SWE-bench (Programming) | 74.9% | 74%+ | 80.6% | 75% | ~72% |
| GPQA Diamond (Reasoning) | 92.8% | 91.3% | 94.3% | Competitive | 89% |
| AIME 2025 (Mathematics) | 94.6% | - | 95.0% | 88% | 91% |
| HLE (General Knowledge) | Excellent | Excellent | Excellent+ | Very Good | Very Good |
| Creative Writing | Very Good | Best | Good | Free Style | Good |
| Context Window | 128K | 1M | 1M+ | 256K | 128K |
| Multimedia | Images + Audio | Images + Tools | Video + Audio + Images | Images + X Data | Images |
| Speed | Fast | Medium | Fast | Fastest | Fast |
| Price (Relative) | Medium | High | Low | Very Low | Free |
Detailed Analysis of Each Model
GPT-5.4 “Thinking” — The Comprehensive Model
Released on March 5, 2026. The main feature is the internal guidance mechanism — the system automatically chooses between response speed for simple questions and depth of analysis for complex problems.
Strengths:
- Financial reasoning and economic analysis
- Image and visual content production
- Largest ecosystem: over 15,000 applications and plugins
- Canvas editor for collaborative writing
- Personal memory across sessions
Limitations: Price higher than Gemini and Grok, context window (128K) smaller than competitors.
🟠 Claude Opus 4.6 — Programming and Long Texts
Released on March 8, 2026. The 1 million token context window allows accommodating an entire software project in a single session.
Strengths:
- Powers development environments Cursor, Windsurf, and Claude Code
- Code review with detailed comments
- Produces natural text with high quality while maintaining personal style
- Extended Thinking mode for complex problems
- Highest level of safety and ethical discipline
Limitations: Highest price, no built-in web search, slower than GPT and Grok.
Gemini 3.1 Pro — Benchmark Performance
Released on February 19, 2026 and achieved 94.3% on GPQA Diamond. Leads in 13 out of 16 benchmarks according to independent evaluations.
Strengths:
- Mathematics, science, and complex technical problems
- Video, audio, and image understanding
- Largest context window (1M+ tokens)
- Integration with Google Workspace, Search, and Cloud
- Lowest price among leading models ($2 input / $12 output)
- Antigravity IDE for building complete applications
Limitations: Slower than GPT-5.4 in complex tasks, tends to be verbose in some outputs.
🟡 Grok 4 — Speed and Live Data
xAI’s model distinguished by direct access to X platform data.
Strengths:
- Fastest response time among models
- Lowest price ($0.20 input / $0.50 output)
- SWE-bench 75%
- Free writing style
Limitations: Context window (256K) smaller than Claude and Gemini, ecosystem limited compared to competitors.
DeepSeek V4 — The Anticipated Open Model
According to leaks, the upcoming model will contain trillion parameters open source — only 32 billion active in each call through Mixture-of-Experts architecture.
Strengths:
- Free and locally runnable
- Competitive performance with Claude Sonnet and GPT-5.4 in routine tasks
- Multimedia support (text + images + audio + video)
Limitations: Requires massive computational resources for local operation, still behind leading models in complex tasks.
Price and Plan Comparison
| Plan | GPT-5.4 | Claude | Gemini | Grok |
|---|---|---|---|---|
| Free | Limited | Limited | Generous | Included in X Premium |
| Individual | $20/month | $20/month | $20/month | Within X Premium+ |
| Pro/Enterprise | $200/month | $200/month | $30/month | Available |
Conclusion
Each model excels in a specific domain:
- Gemini 3.1 Pro: Highest benchmark performance, lowest price, massive context window
- Claude Opus 4.6: Strongest in programming and complex texts
- GPT-5.4: Most comprehensive with the largest ecosystem
- Grok 4: Fastest and cheapest with live X data
- DeepSeek V4: Open source with competitive performance
Actual usage indicates a multi-model trend — directing tasks to the most suitable model according to complexity and cost.
Explore More
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