GPT-3.5 Turbo vs OpenAI o3 Pro
Performance benchmarks + pricing comparison — updated April 2026
GPT-3.5 Turbo
OpenAIBudget model for simple tasks. Being phased out but still widely used.
| Input | $0.500/M |
| Output | $1.50/M |
| Context | 16K tokens |
| Best For | Simple chatbots, basic text generation |
| Benchmark | 40/100 |
OpenAI o3 Pro
OpenAITop-tier reasoning model combining o3's coding strength with extended compute. The most powerful OpenAI model for reasoning-heavy coding.
| Input | $20.00/M |
| Output | $80.00/M |
| Context | 200K tokens |
| Best For | Complex algorithm design, system architecture, research coding |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | GPT-3.5 Turbo | OpenAI o3 Pro | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.06 | $3.10 | GPT-3.5 Turbo saves $3.04 (98%) |
| Medium Feature (10K lines) | $0.48 | $23.00 | GPT-3.5 Turbo saves $22.52 (98%) |
| Large Project (50K lines) | $2.38 | $115.00 | GPT-3.5 Turbo saves $112.63 (98%) |
| Code Review (5K lines) | $0.13 | $5.50 | GPT-3.5 Turbo saves $5.38 (98%) |
Verdict
GPT-3.5 Turbo wins on both price and performance — $0.500/M input with a benchmark score of N/A/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 Sonnet
AnthropicPrevious generation Sonnet. Still excellent for coding tasks at the same price point.
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.