Intelligence
n/a
GPT-5.5 Pro
wins
35.9
Claude Sonnet 4.6
GPT-5.5 Pro vs Claude Sonnet 4.6
GPT-5.5 Pro from OpenAI and Claude Sonnet 4.6 from Anthropic are shown side by side so you can compare pricing, model IDs, context and output limits, modalities, tool use, release details, and benchmark results where data is available.
GPT-5.5 ProOpenAI
Claude Sonnet 4.6Anthropic
Basic Information
Name
GPT-5.5 ProGPT-5.5 Pro
Model id
GPT-5.5 Progpt-5.5-pro
Intro
GPT-5.5 ProGPT-5.5 Pro is the higher-compute variant of OpenAI’s GPT-5.5 generation, intended for the hardest professional tasks where answer quality matters more than speed. OpenAI materials describe the Pro tier as thinking harder for greater precision across coding, research, data analysis, and document-heavy work. It should be positioned for difficult reasoning and professional-grade deliverables rather than routine chat.
Author
GPT-5.5 ProOpenAI
Released date
GPT-5.5 Pro2026-04-23
Name
Claude Sonnet 4.6Claude Sonnet 4.6
Model id
Claude Sonnet 4.6claude-sonnet-4.6
Intro
Claude Sonnet 4.6Claude Sonnet 4.6 is presented as a broad upgrade for coding, computer use, long-context reasoning, agent planning, knowledge work, and design. Anthropic materials describe it as a strong middle tier with 1M-context beta support and better agent behavior. It is suited to teams that want near-frontier capability with more practical cost and latency than Opus.
Author
Claude Sonnet 4.6Anthropic
Released date
Claude Sonnet 4.62026-02-17
Pricing
Input
GPT-5.5 Pro$30/M
Output
GPT-5.5 Pro$180/M
Cached input
GPT-5.5 Pron/a
Input
Claude Sonnet 4.6$3/M
Output
Claude Sonnet 4.6$15/M
Cached input
Claude Sonnet 4.6$0.3/M
Context & Output
Context length
GPT-5.5 Pro1.1M
Max output tokens
GPT-5.5 Pro128K
Context length
Claude Sonnet 4.61M
Max output tokens
Claude Sonnet 4.664K
Capabilities
Reasoning
GPT-5.5 Pro
Knowledge
GPT-5.5 Pro2025-12-01
Attachment
GPT-5.5 Pro
Input modalities
GPT-5.5 ProImage, PDF, Text
Output modalities
GPT-5.5 ProText
Temperature
GPT-5.5 Pro
Tool use
GPT-5.5 Pro
Reasoning
Claude Sonnet 4.6
Knowledge
Claude Sonnet 4.62025-08-31
Attachment
Claude Sonnet 4.6
Input modalities
Claude Sonnet 4.6Image, PDF, Text
Output modalities
Claude Sonnet 4.6Text
Temperature
Claude Sonnet 4.6
Tool use
Claude Sonnet 4.6
Benchmark
Coding
n/a
GPT-5.5 Pro
wins
46.4
Claude Sonnet 4.6
GPT-5.5 ProOpenAI
Claude Sonnet 4.6Anthropic
Knowledge & Reasoning
GPQA
n/a
HLE
n/a
GPQA
wins79.9%
HLE
wins13.2%
Coding
SciCode
n/a
Terminal-Bench Hard
n/a
SciCode
wins46.9%
Terminal-Bench Hard
wins46.2%
Instruction Following & Agent Tasks
IFBench
n/a
AA-LCR
n/a
Tau2
n/a
IFBench
wins41.2%
AA-LCR
wins57.7%
Tau2
wins79.5%
FAQ
Which model is better, GPT-5.5 Pro or Claude Sonnet 4.6?+
GPT-5.5 Pro and Claude Sonnet 4.6 should be compared by workload. This page places price, context, output limits, capabilities, and benchmark data side by side. It is also relevant to: claude vs chatgpt, claude ai vs chatgpt, chatgpt vs claude comparison, chat gpt vs claude.
Is Claude Sonnet 4.6 cheaper than GPT-5.5 Pro?+
Use the pricing rows above to compare input, output, and cached input prices for GPT-5.5 Pro and Claude Sonnet 4.6.
Which model supports a longer context length?+
GPT-5.5 Pro lists 1.1M context length, while Claude Sonnet 4.6 lists 1M.
Can I access both models through TokenHub?+
If both models are available in the TokenHub catalog, you can route requests to GPT-5.5 Pro and Claude Sonnet 4.6 through the TokenHub API.