Claude Sonnet 5 vs GPT-6 Sol
Claude Sonnet 5 and GPT-6 Sol are closely matched at 47.9 and 49.4 on the LLM Stats Score. Claude Sonnet 5 and GPT-6 Sol cost the same.
Anthropic · OpenAI · Updated for 2026
Which is better?
Claude Sonnet 5 and GPT-6 Sol are closely matched on the overall LLM Stats Score at 47.9 and 49.4.
In the 2 individual benchmarks reported for both models, GPT-6 Sol wins 2; this is a narrower head-to-head signal than the composite indexes.
GPT-6 Sol also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Sonnet 5
- you want predictable pricing at $2.00/M input and $10.00/M output
Choose GPT-6 Sol
- your work emphasizes agents — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Sep 2026
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
23 reported for Claude Sonnet 5 · 5 for GPT-6 Sol
Claude Sonnet 5 outperforms in 0 benchmarks, while GPT-6 Sol is better at 2 benchmarks (DeepSWE 1.1, FrontierCode 1.1).
GPT-6 Sol significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Sonnet 5 ($2.00/1M tokens) costs the same as GPT-6 Sol ($2.00/1M tokens).
For output processing, Claude Sonnet 5 ($10.00/1M tokens) costs the same as GPT-6 Sol ($10.00/1M tokens).
In conclusion, Claude Sonnet 5 and GPT-6 Sol cost the same.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-6 Sol accepts 1,050,000 input tokens compared to Claude Sonnet 5's 1,000,000 tokens. GPT-6 Sol can generate longer responses up to 128,000 tokens, while Claude Sonnet 5 is limited to 64,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Sonnet 5 and GPT-6 Sol support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Sonnet 5
GPT-6 Sol
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude Sonnet 5 was released on 2026-06-30, while GPT-6 Sol was released on 2026-09-22.
GPT-6 Sol is 3 months newer than Claude Sonnet 5.
Jun 30, 2026
2 months ago
Sep 22, 2026
0 days ago
2mo newerKnowledge Cutoff
When training data ends
GPT-6 Sol has a documented knowledge cutoff of 2026-04-20, while Claude Sonnet 5's cutoff date is not specified.
We can confirm GPT-6 Sol's training data extends to 2026-04-20, but cannot make a direct comparison without Claude Sonnet 5's cutoff date.
—
Apr 2026
Provider Availability
Claude Sonnet 5 is available from Anthropic, DeepInfra. GPT-6 Sol is available from OpenAI.
Claude Sonnet 5
GPT-6 Sol
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Sonnet 5 and GPT-6 Sol side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Sonnet 5 vs GPT-6 Sol.