Claude Sonnet 5 vs GPT-5.6 Sol

Claude Sonnet 5 from Anthropic and GPT-5.6 Sol from OpenAI 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-5.6 Sol is the stronger capability default at maximum effort, with a 58.9 Intelligence Index and 77.4 Coding Index versus 53.4 and 71.5 for Claude Sonnet 5. Choose Sonnet 5 when 60% lower input cost and about 67% lower output cost matter more.

Recommendation based on Claude Sonnet 5 (Non-reasoning, High Effort) vs GPT-5.6 Sol (max).

Comparison Highlights

Claude Sonnet 5Anthropic
GPT-5.6 SolOpenAI
Best For
High-value codingscalable Anthropic agentscost control
General automationstronger benchmark capabilityOpenAI workflows
How To Read ItUse-case synthesis from model capabilities and positioning.
Workload Fit
ValueAnthropicProduction
CapabilityOpenAIAutomation
How To Read ItThe workloads each model is most directly shaped for.
Input
$2/MEdge
$5/M
How To Read ItLower is better when prompts or retrieval payloads are large.
Output
$10/MEdge
$30/M
How To Read ItLower is better for reasoning-heavy or long-generation traffic.
Context length
1M
1.1M
How To Read ItHigher is better for repositories, retrieval packs, and transcripts.
Input modalities
Text, Image, PDF
Text, Image, PDF
How To Read ItBroader input support reduces the need for separate vision or video models.

Model Selection Guide

Claude Sonnet 5Anthropic

Choose Claude Sonnet 5 When

  • $2 input and $10 output per million tokens, versus $5 and $30
  • Text, image, and PDF input with a 1M context and 128K output
  • Selectable reasoning effort for cost-sensitive coding and agent workloads
GPT-5.6 SolOpenAI

Choose GPT-5.6 Sol When

  • A 58.9 Intelligence Index and 77.4 Coding Index, versus 53.4 and 71.5
  • A slightly larger 1.05M context window with the same 128K output
  • A 94.1 GPQA score at maximum effort and an OpenAI-centered workflow

Basic Information

Claude Sonnet 5Anthropic
GPT-5.6 SolOpenAI

Name

Claude Sonnet 5Claude Sonnet 5

Model id

Claude Sonnet 5claude-sonnet-5

Intro

Claude Sonnet 5Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max, and x-high), a 1M-token context window, and text, image, and file inputs. Sonnet 5 uses an updated tokenizer and includes real-time cyber safeguards that block certain high-risk dual-use activities.

Author

Claude Sonnet 5Anthropic

Released date

Claude Sonnet 52026-06-30

Context length

Claude Sonnet 51M

Max output tokens

Claude Sonnet 5128K

Name

GPT-5.6 SolGPT-5.6 Sol

Model id

GPT-5.6 Solgpt-5.6-sol

Intro

GPT-5.6 SolGPT-5.6 Sol is the standard version of the Sol series. It is suitable for general Q&A, text processing, content drafting, summarization, lightweight coding assistance, and business automation tasks. Sol is designed for scenarios that need solid general capability while keeping response efficiency and cost in mind. It can be used for product features, chat assistants, content-generation tools, data cleaning, knowledge-base Q&A, and batch-processing tasks. For large-scale usage or rapid prototyping, Sol is a flexible starting point.

Author

GPT-5.6 SolOpenAI

Released date

GPT-5.6 Sol2026-07-09

Context length

GPT-5.6 Sol1.1M

Max output tokens

GPT-5.6 Sol128K

Pricing

Claude Sonnet 5Anthropic
GPT-5.6 SolOpenAI

Input

Claude Sonnet 5$2/M

Output

Claude Sonnet 5$10/M

Cached input

Claude Sonnet 5$0.2/M

Input

GPT-5.6 Sol$5/M

Output

GPT-5.6 Sol$30/M

Cached input

GPT-5.6 Sol$0.5/M

Capabilities

Claude Sonnet 5Anthropic
GPT-5.6 SolOpenAI

Reasoning

Claude Sonnet 5

Knowledge

Claude Sonnet 52026-01-31

Attachment

Claude Sonnet 5

Input modalities

Claude Sonnet 5Text, Image, PDF

Output modalities

Claude Sonnet 5Text

Temperature

Claude Sonnet 5

Tool use

Claude Sonnet 5

Reasoning

GPT-5.6 Sol

Knowledge

GPT-5.6 Sol2026-02-16

Attachment

GPT-5.6 Sol

Input modalities

GPT-5.6 SolText, Image, PDF

Output modalities

GPT-5.6 SolText

Temperature

GPT-5.6 Sol

Tool use

GPT-5.6 Sol

Benchmark

Claude Sonnet 5Anthropic
GPT-5.6 SolOpenAI

Intelligence

41.7

Coding

66.4

Intelligence

wins58.9

Coding

wins77.4

Knowledge & Reasoning

GPQA

80%

HLE

17.8%

GPQA

wins94.1%

HLE

wins47.2%

Coding

SciCode

48.6%

Terminal-Bench Hard

n/a

SciCode

wins56.1%

Terminal-Bench Hard

wins65.9%

Instruction Following & Agent Tasks

IFBench

n/a

AA-LCR

58.7%

Tau2

n/a

IFBench

wins72.7%

AA-LCR

wins73.7%

Tau2

wins85.1%

FAQ

Which model is better, Claude Sonnet 5 or GPT-5.6 Sol?

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Claude Sonnet 5 and GPT-5.6 Sol 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 sonnet 5 vs gpt-5.6 sol, sonnet 5 vs gpt 5.6, claude vs chatgpt.

Is GPT-5.6 Sol cheaper than Claude Sonnet 5?

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Use the pricing rows above to compare input, output, and cached input prices for Claude Sonnet 5 and GPT-5.6 Sol.

Which model supports a longer context length?

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Claude Sonnet 5 lists 1M context length, while GPT-5.6 Sol lists 1.1M.

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 Claude Sonnet 5 and GPT-5.6 Sol through the TokenHub API.