Claude Sonnet 4 vs GPT-4 Turbo
Claude Sonnet 4 significantly outperforms across most benchmarks. Claude Sonnet 4 is 2.5x cheaper per token.
Anthropic · OpenAI · Updated for 2026
Which is better?
Claude Sonnet 4 outperforms in 1 benchmarks (GPQA), while GPT-4 Turbo is better at 0 benchmarks. Claude Sonnet 4 significantly outperforms across most benchmarks.
On price, Claude Sonnet 4 is roughly 2.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude Sonnet 4 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose Claude Sonnet 4
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- cost matters — it's about 2.5x cheaper per token
- you process long inputs — it offers a 200,000 token context window
- you want the most recent training data — it shipped May 2025
Choose GPT-4 Turbo
- you want predictable pricing at $10.00/M input and $30.00/M output
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
Claude Sonnet 4 outperforms in 1 benchmarks (GPQA), while GPT-4 Turbo is better at 0 benchmarks.
Claude Sonnet 4 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Sonnet 4 ($3.00/1M tokens) is 3.3x cheaper than GPT-4 Turbo ($10.00/1M tokens).
For output processing, Claude Sonnet 4 ($15.00/1M tokens) is 2.0x cheaper than GPT-4 Turbo ($30.00/1M tokens).
In conclusion, GPT-4 Turbo is more expensive than Claude Sonnet 4.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Sonnet 4 accepts 200,000 input tokens compared to GPT-4 Turbo's 128,000 tokens. Claude Sonnet 4 can generate longer responses up to 64,000 tokens, while GPT-4 Turbo is limited to 4,096 tokens.
Input Capabilities
Supported data types and modalities
Claude Sonnet 4 supports multimodal inputs, whereas GPT-4 Turbo does not.
Claude Sonnet 4 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Sonnet 4
GPT-4 Turbo
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 4 was released on 2025-05-22, while GPT-4 Turbo was released on 2024-04-09.
Claude Sonnet 4 is 14 months newer than GPT-4 Turbo.
May 22, 2025
1.3 years ago
1.1yr newerApr 9, 2024
2.4 years ago
Knowledge Cutoff
When training data ends
GPT-4 Turbo has a documented knowledge cutoff of 2023-12-31, while Claude Sonnet 4's cutoff date is not specified.
We can confirm GPT-4 Turbo's training data extends to 2023-12-31, but cannot make a direct comparison without Claude Sonnet 4's cutoff date.
—
Dec 2023
Provider Availability
Claude Sonnet 4 is available from Anthropic, Bedrock, Google. GPT-4 Turbo is available from Azure, OpenAI.
Claude Sonnet 4
GPT-4 Turbo
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Sonnet 4 and GPT-4 Turbo side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Sonnet 4 vs GPT-4 Turbo.