GPT-5.2 vs Claude Sonnet 4.6, API pricing and model comparison

Compare GPT-5.2 vs Claude Sonnet 4.6 side by side by input/output token price, context window, benchmark signals, capabilities, and example monthly API cost.

Comparison matrixLLM Table

Models to compare2/4

Model 1

400K

Select model366 models

Model 2

Select model366 models

OpenAI: GPT-5.2

OpenRouter

Cheapest (this scenario)

Input

$1.75 / 1M

Output

$14.00 / 1M

Context

400K

Monthly cost

$595.00

Benchmark

1,440LMArena Text Arena

VisionToolsJSONReasoningLong context

Anthropic: Claude Sonnet 4.6

Claude API

Input

$3.00 / 1M

Output

$15.00 / 1M

Context

1MLargest context

Monthly cost

$750.00

Benchmark

1,466Top benchmarkLMArena Text Arena

VisionToolsReasoningLong context

OpenAI: GPT-5.2

OpenRouter

Anthropic: Claude Sonnet 4.6

Claude API

Input

$1.75 / 1MCheapest (this scenario)

$3.00 / 1M

Output

$14.00 / 1MCheapest (this scenario)

$15.00 / 1M

Context

400K

1MLargest context

Benchmark

1,440

LMArena Text Arena

1,466Top benchmark

LMArena Text Arena

Monthly cost

$595.00Cheapest (this scenario)

$750.00

Capabilities

VisionToolsJSONReasoningLong context

VisionToolsReasoningLong context

FAQ

Model comparison notes

What should I compare first?

Start with scenario cost, context window, benchmark signal, and required capabilities such as tools, JSON output, reasoning, vision, or audio.

Why can the cheapest model be a poor fit?

Low token price does not guarantee enough context, output limit, quality, or tool support. The comparison table keeps cost and capability signals visible together.

Are route prices directly comparable?

They are useful directional comparisons, but direct provider APIs and aggregator routes can have different terms, limits, and billing details.

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