Is GPT-5.4 better than Claude Opus 4.6?

It depends on your use case. GPT-5.4 leads on knowledge work (GDPval 83%), computer use (OSWorld 75%), and terminal-based coding (Terminal-Bench 75.1%). Claude Opus 4.6 leads on production coding (SWE-Bench 80.8%), visual reasoning (MMMU Pro 85.1%), and web browsing (BrowseComp 84%). Neither is universally "better."

Which model is cheapest for production use?

Gemini 3.1 Pro at $2/$12 per MTok is the cheapest frontier model. GPT-5.4 follows at $2.50/$15, and Claude Opus 4.6 is the most expensive at $5/$25. For batch processing, GPT-5.4 drops to $1.25/$7.50 with batch pricing.

Can I use GPT-5.4 for coding in Codex?

Yes. OpenAI Codex now supports GPT-5.4 with an experimental 1M token context window. GPT-5.4 achieves Terminal-Bench 2.0 score of 75.1% and SWE-Bench Pro of 57.7%. The /fast mode offers up to 1.5× faster token speed.

What is the context window of Gemini 3.1 Pro?

Gemini 3.1 Pro offers a 2M token context window — the largest among the three models. This is 10× Opus's standard 200K and 2× GPT-5.4's 1M Codex mode. For prompts over 200K tokens, Gemini charges a higher tier of $4/$18 per MTok.

Is GPT-5.4 available now?

Yes. GPT-5.4 is available in ChatGPT for Plus, Team, and Pro users, and through the API. GPT-5.4 Pro ($30/$180 per MTok) offers enhanced reasoning for research-grade tasks.

Which model is best for coding?

Claude Opus 4.6 narrowly leads on SWE-Bench Verified (80.8% vs Gemini's 80.6%), but GPT-5.4 dominates Terminal-Bench 2.0 (75.1%) for sustained terminal-heavy coding. For best results, use Opus for code generation and review, and GPT-5.4 for terminal-based agentic coding in tools like Codex or Cursor.

Should I switch to GPT-5.4 from Claude right now?

Don't hard-switch immediately. Run GPT-5.4 side-by-side in your evaluation suite. The pragmatic approach: ship with your current model (Claude Opus 4.6 or Gemini 3.1 Pro), add GPT-5.4 to your eval pipeline, and migrate specific workloads where it demonstrably outperforms.

What about DeepSeek V4?

DeepSeek V4 is currently in early access and could disrupt the budget tier when fully released. It's worth monitoring but not yet a factor in production model selection for March 2026.

GPT-5.4 vs Claude Opus 4.6 vs Gemini 3.1 Pro: Best AI Model (2026)

GPT-5.4 vs Claude Opus 4.6 vs Gemini 3.1 Pro: Best Frontier AI Model (March 2026)Comprehensive three-way comparison of GPT-5.4, Claude Opus 4.6, and Gemini 3.1 Pro. Benchmarks, pricing, coding performance, agentic capabilities, and expert recommendations for March 2026.Read the full article at aiworkflows.tools