April 2026 is the most packed month in history for AI model releases. [GPT-5.4](/blog/openai-gpt-5-4-frontier-model-reasoning) from OpenAI, [Claude Opus 4.7](/blog/claude-opus-4-7-anthropic-ai-model) from Anthropic, [Gemini 3.1 Pro](/blog/gemini-3-1-pro-google-deepmind-reasoning) from Google, and Grok from xAI/SpaceX are all vying for the title of best frontier model. How do you make sense of it all? This guide compares the four models on the criteria that matter: pricing, performance, context size, use cases, and availability.
The complete comparison table
| Criterion | GPT-5.4 (OpenAI) | Claude Opus 4.7 (Anthropic) | Gemini 3.1 Pro (Google) | Grok (xAI/SpaceX) |
|---|---|---|---|---|
| Release date | March 5, 2026 | April 16, 2026 | February 19, 2026 | Continuous (via X) |
| Input pricing | $2.5 / M tokens | $5 / M tokens | Variable | Included in X Premium+ |
| Output pricing | $15 / M tokens | $25 / M tokens | Variable | Included in X Premium+ |
| Context | 1.05M tokens | 1M tokens | 1M tokens (2M Antigravity) | Variable |
| Vision | Images | HR images (3.75 MP) | Images, video, audio | Images |
| Computer Use | Yes (native) | Yes | Via Antigravity | No |
| Effort levels | none, low, med, high, xhigh | low, med, high, xhigh, max | Thinking mode | Standard |
| Cyber model | GPT-5.4-Cyber | Mythos (Glasswing) | Via Glasswing | No |
| API | Yes | Yes | Yes | Limited |
| Bedrock/Vertex | No | Yes (both) | Vertex AI | No |
| Batch processing | Yes (-50%) | Yes (-50%) | Yes | No |
| Prompt caching | Yes | Yes (-90%) | Yes | No |
Frontier AI model comparison — April 2026
GPT-5.4: the affordable all-rounder
GPT-5.4 from OpenAI is the most affordable of the four, with pricing at $2.5/$15 per million tokens — half the cost of Opus 4.7. It is the first mainstream model with native computer use, tool search for large tool ecosystems, and support for compaction in long sessions. Its 1.05M token context is the largest of the group.
Best for: teams wanting a versatile model at a controlled cost, large-scale automated workflows, production computer use.
Claude Opus 4.7: the code champion
Claude Opus 4.7 from Anthropic is the undisputed champion of autonomous coding. +13% on code benchmarks, 3x more tasks resolved in production, and near-literal instruction following. Its high-resolution vision (3.75 MP) and improved memory make it the best choice for long agentic workflows where reliability is critical.
Best for: professional software development, autonomous agents, tasks requiring rigor and verification, code review.
Gemini 3.1 Pro: the creative thinker
Gemini 3.1 Pro from Google excels at pure reasoning with 77.1% on ARC-AGI-2. It is the ideal model for vibe coding — describing what you want in natural language and letting the AI create it. Its native integration into Antigravity with 2M tokens of context and multimodal support (text, image, video, audio) make it a powerful choice.
Best for: rapid prototyping, complex data synthesis, creative projects, mobile development (Android Studio).
Grok: the integrated outsider
Grok, the model from xAI (now a SpaceX subsidiary), stands out through its native integration with X (formerly Twitter) and its more direct tone. Since the SpaceX-xAI merger, Grok benefits from massive resources. But its API remains limited and it lacks enterprise features (batch, caching, multi-cloud).
Best for: X Premium+ users, social media trend analysis, direct conversations without excessive filtering.
Which model to choose? Our recommendation
- You develop professional software -> Claude Opus 4.7. The best at code, reliable on long-running tasks.
- You want the best value for money -> GPT-5.4. Half the price, versatile, native computer use.
- You do prototyping and data visualization -> Gemini 3.1 Pro. The best at reasoning and vibe coding.
- You are in the X/SpaceX ecosystem -> Grok. Native integration, unlimited access with Premium+.
- You need AI cybersecurity -> Apply for access to Mythos (Glasswing) or GPT-5.4-Cyber (Trusted Access).
Compare in detail
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