Compare AI Models

Put any models head-to-head — benchmarks, context window, parameters, weights and pricing in one view. Pick up to four; the 🏆 marks the leader on each benchmark.

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Claude Opus 5.5GPT-5.5Claude Opus 4.8

Claude Opus 5.5

Anthropic

GPT-5.5

OpenAI

Claude Opus 4.8

Anthropic

Type

Multimodal

Context

—

1050K tokens

1000K tokens

Parameters

—

Weights

🔒 Proprietary

Benchmarks

Terminal-Bench 4.0

66.4

—

OSWorld 2.1 (partial)

81.8

—

Humanity's Last Exam (with tools)

67.7

—

CursorBench 4.0

57.8

—

MMLU

—

GPQA Diamond

—

SWE-bench Verified

—

AIME (math)

—

100

—

Pricing

API $4 / 1M input, $20 / 1M output, $0.20 / 1M cache reads, $5 / 1M cache writes. Fast mode (up to 2.5x speed) $8 / $40. On the Claude API, AWS, Google Cloud and Microsoft Azure; zero data retention available. Anthropic's announcement does not state the context window.

API ~$5 / 1M input, ~$30 / 1M output. ChatGPT Plus ₹1,999/mo (incl. GST), Pro tier for heaviest use; not on Free.

API ~$5 / 1M input, ~$25 / 1M output. Claude Pro/Max (~$20/mo, no India INR plan — ~₹1,800+ after FX/tax).

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Benchmark scores are widely-reported public figures (higher is better) for relative comparison — they vary by source; check the provider for official results. 🏆 = best among the models shown.