Claude 3.5 Sonnet vs GPT-4.1
Performance benchmarks + pricing comparison — updated April 2026
Claude 3.5 Sonnet
AnthropicPrevious generation Sonnet. Still excellent for coding tasks at the same price point.
| Input | $3.00/M |
| Output | $15.00/M |
| Context | 200K tokens |
| Best For | Coding assistants, web development, data analysis |
| Benchmark | 72/100 |
GPT-4.1
OpenAIUpdated GPT-4 generation with improved instruction following and reduced hallucination. Better coding accuracy than GPT-4o.
| Input | $2.00/M |
| Output | $8.00/M |
| Context | 128K tokens |
| Best For | Production coding, API development, complex instructions |
| Benchmark | 80/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | Claude 3.5 Sonnet | GPT-4.1 | Leader |
|---|---|---|---|
| Overall Score | 72 | 80 | GPT-4.1 leads by 8pts |
| SWE-bench Verified | 68 | 76 | GPT-4.1 leads by 8pts |
| LiveCodeBench | 75 | 82 | GPT-4.1 leads by 7pts |
| HumanEval | 90 | 94 | GPT-4.1 leads by 4pts |
| BigCodeBench | 58 | 68 | GPT-4.1 leads by 10pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | Claude 3.5 Sonnet | GPT-4.1 | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.62 | $0.31 | GPT-4.1 saves $0.31 (50%) |
| Medium Feature (10K lines) | $4.66 | $2.30 | GPT-4.1 saves $2.36 (51%) |
| Large Project (50K lines) | $23.29 | $11.50 | GPT-4.1 saves $11.79 (51%) |
| Code Review (5K lines) | $1.20 | $0.55 | GPT-4.1 saves $0.65 (54%) |
Value Analysis (Price per Benchmark Score Point)
Lower is better — how much you pay for each point of benchmark performance.
| Model | Overall Score | Price per Score Point | Verdict |
|---|---|---|---|
| Claude 3.5 Sonnet | 72 | $0.042/pt | Better value |
| GPT-4.1 | 80 | $0.063/pt | Higher cost per point |
Claude 3.5 Sonnet delivers the best value at $0.042 per score point.
Strengths & Weaknesses
Claude 3.5 Sonnet
- + Balanced performance
- + Computer use capability
- + Artifact generation
- - Older architecture
- - Falling behind Sonnet 4
GPT-4.1
- + Latest GPT model
- + Strong across all benchmarks
- - Premium pricing
Verdict
GPT-4.1 wins on both price and performance — $2.00/M input with a benchmark score of 80/100.
For most developers, this is the clear choice between these two models.
Compare with Other Models
Claude Sonnet 4
AnthropicAnthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.
Claude Opus 4
AnthropicAnthropic's most powerful model. Best for complex reasoning and challenging coding tasks.
Claude 3.5 Haiku
AnthropicFast, cost-effective model for high-volume tasks. Great for code review and simple queries.
Claude 3 Opus
AnthropicFirst generation Opus. Highest reasoning capability in the Claude 3 family.
Claude 3 Sonnet
AnthropicFirst generation Sonnet. Balanced performance for general tasks.
Claude 3 Haiku
AnthropicCheapest Claude model. Fast responses for simple tasks and basic coding.