GPT vs Claude vs Gemini (2026)

Side-by-side comparison of the three most popular frontier families — using the latest flagship-tier models on our leaderboard.

GPT-5.5 (OpenAI)

GPQA Diamond: 93.6%
SWE-Bench: 78.6%
Context: 1M
API cost: $5 / $30

Claude Opus 4.7 (Anthropic)

GPQA Diamond: 94.2%
SWE-Bench: 82%
Context: 200K
API cost: $5 / $25

Gemini 3.1 Pro (Google)

GPQA Diamond: 94.3%
SWE-Bench: 80.6%
Context: 1M
API cost: $2 / $12

Which should you choose?

Claude — Best for coding agents and instruction-following; Mythos Preview tops SWE-Bench. GPT — Strong all-rounder, deep tool and plugin ecosystem. Gemini — Competitive benchmarks, attractive pricing, excellent multimodal and long-context options.

Many teams route by task: cheap model for drafts, frontier model for hard steps. Use our compare tool for any two models.

Is GPT-5.5 better than Claude for coding?

On SWE-Bench, Claude Opus 4.7 and Claude Mythos rank higher than GPT-5.5 today. GPT-5.5 Pro closes much of the gap. Your stack (IDE integration, latency, safety filters) often matters as much as the benchmark.

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