GPT-5.5 vs Claude Sonnet 4.6

GPT-5.5 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.

Overall Recommendation

GPT-5.5 is the capability default, leading Claude Sonnet 4.6 on TokenHub’s Intelligence and Coding indexes and offering twice the maximum output. Choose Sonnet for a lower-cost Claude workflow and balanced production agents.

Recommendation based on GPT-5.5 (xhigh) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort).

Comparison Highlights

GPT-5.5OpenAI
Claude Sonnet 4.6Anthropic
Best For
Professional codingresearchdocument-heavy work
Balanced codingagentsproduction knowledge work
How To Read ItUse-case synthesis from model capabilities and positioning.
Workload Fit
CodingAnalysisKnowledge work
CodingAgentsProduction
How To Read ItThe workloads each model is most directly shaped for.
Input
$5/M
$3/MEdge
How To Read ItLower is better when prompts or retrieval payloads are large.
Output
$30/M
$15/MEdge
How To Read ItLower is better for reasoning-heavy or long-generation traffic.
Context length
1.1M
1M
How To Read ItHigher is better for repositories, retrieval packs, and transcripts.
Input modalities
Image, PDF, Text
Image, PDF, Text
How To Read ItBroader input support reduces the need for separate vision or video models.

Model Selection Guide

GPT-5.5OpenAI

Choose GPT-5.5 When

  • A 54.8 Intelligence Index and 59.1 Coding Index in TokenHub’s xhigh profile
  • $5 input and $30 output per million tokens, with $0.50 cached input
  • A 1.05M context window, 128K maximum output, and text, image, and PDF input
Claude Sonnet 4.6Anthropic

Choose Claude Sonnet 4.6 When

  • A 47.2 Intelligence Index and 50.9 Coding Index in TokenHub’s max-effort profile
  • $3 input and $15 output per million tokens
  • A 1M context window, 64K maximum output, and text, image, and PDF input

Basic Information

GPT-5.5OpenAI
Claude Sonnet 4.6Anthropic

Name

GPT-5.5GPT-5.5

Model id

GPT-5.5gpt-5.5

Intro

GPT-5.5GPT-5.5 is described by OpenAI as a smarter frontier model for coding, research, data analysis, and professional knowledge work. The official launch messaging emphasizes higher capability, better speed than previous difficult-work models, and strong performance on tasks involving documents and structured analysis. Its description should focus on broad professional intelligence rather than a single niche.

Author

GPT-5.5OpenAI

Released date

GPT-5.52026-04-23

Context length

GPT-5.51.1M

Max output tokens

GPT-5.5128K

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

Context length

Claude Sonnet 4.61M

Max output tokens

Claude Sonnet 4.664K

Pricing

GPT-5.5OpenAI
Claude Sonnet 4.6Anthropic

Input

GPT-5.5$5/M

Output

GPT-5.5$30/M

Cached input

GPT-5.5$0.5/M

Input

Claude Sonnet 4.6$3/M

Output

Claude Sonnet 4.6$15/M

Cached input

Claude Sonnet 4.6$0.3/M

Capabilities

GPT-5.5OpenAI
Claude Sonnet 4.6Anthropic

Reasoning

GPT-5.5

Knowledge

GPT-5.52025-12-01

Attachment

GPT-5.5

Input modalities

GPT-5.5Image, PDF, Text

Output modalities

GPT-5.5Text

Temperature

GPT-5.5

Tool use

GPT-5.5

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

GPT-5.5OpenAI
Claude Sonnet 4.6Anthropic

Intelligence

wins54.8

Coding

wins59.1

Intelligence

47.2

Coding

50.9

Knowledge & Reasoning

GPQA

wins93.5%

HLE

wins44.3%

GPQA

87.5%

HLE

30%

Coding

SciCode

wins56.1%

Terminal-Bench Hard

wins60.6%

SciCode

46.8%

Terminal-Bench Hard

53.0%

Instruction Following & Agent Tasks

IFBench

wins75.9%

AA-LCR

wins74.3%

Tau2

wins93.9%

IFBench

56.6%

AA-LCR

70.7%

Tau2

75.7%

FAQ

Which model is better, GPT-5.5 or Claude Sonnet 4.6?

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GPT-5.5 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?

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Use the pricing rows above to compare input, output, and cached input prices for GPT-5.5 and Claude Sonnet 4.6.

Which model supports a longer context length?

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GPT-5.5 lists 1.1M context length, while Claude Sonnet 4.6 lists 1M.

Can I access both models through TokenHub?

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If both models are available in the TokenHub catalog, you can route requests to GPT-5.5 and Claude Sonnet 4.6 through the TokenHub API.