GPT-3.5 Turbo vs Llama 3.1 70B
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 |
Llama 3.1 70B
MetaMeta's mid-size Llama 3.1. Strong general performance with open weights for custom deployment.
| Input | $0.200/M |
| Output | $0.400/M |
| Context | 128K tokens |
| Best For | General AI tasks, custom deployment, fine-tuning |
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 | Llama 3.1 70B | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.06 | $0.02 | Llama 3.1 70B saves $0.04 (70%) |
| Medium Feature (10K lines) | $0.48 | $0.15 | Llama 3.1 70B saves $0.33 (68%) |
| Large Project (50K lines) | $2.38 | $0.75 | Llama 3.1 70B saves $1.63 (68%) |
| Code Review (5K lines) | $0.13 | $0.04 | Llama 3.1 70B saves $0.08 (64%) |
Verdict
Llama 3.1 70B wins on both price and performance — $0.200/M input with a benchmark score of N/A/100.
For most developers, this is the clear choice between these two models.
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