GPT-4o vs Grok 3
Performance benchmarks + pricing comparison — updated April 2026
GPT-4o
OpenAIOpenAI's flagship multimodal model. Strong coding and reasoning at competitive pricing.
| Input | $2.50/M |
| Output | $10.00/M |
| Context | 128K tokens |
| Best For | General coding, multimodal tasks, chatbots |
| Benchmark | 75/100 |
Grok 3
xAIxAI's flagship model. Strong general-purpose capability with real-time knowledge access through X platform integration.
| Input | $3.00/M |
| Output | $15.00/M |
| Context | 128K tokens |
| Best For | General coding, research tasks, current-event-aware applications |
| Benchmark | 70/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | GPT-4o | Grok 3 | Leader |
|---|---|---|---|
| Overall Score | 75 | 70 | GPT-4o leads by 5pts |
| SWE-bench Verified | 70 | 64 | GPT-4o leads by 6pts |
| LiveCodeBench | 78 | 72 | GPT-4o leads by 6pts |
| HumanEval | 90 | 88 | GPT-4o leads by 2pts |
| BigCodeBench | 62 | 56 | GPT-4o leads by 6pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | GPT-4o | Grok 3 | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.41 | $0.55 | GPT-4o saves $0.15 (27%) |
| Medium Feature (10K lines) | $3.06 | $4.05 | GPT-4o saves $0.99 (24%) |
| Large Project (50K lines) | $15.31 | $20.25 | GPT-4o saves $4.94 (24%) |
| Code Review (5K lines) | $0.78 | $0.90 | GPT-4o saves $0.12 (13%) |
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 |
|---|---|---|---|
| GPT-4o | 75 | $0.033/pt | Better value |
| Grok 3 | 70 | $0.043/pt | Higher cost per point |
GPT-4o delivers the best value at $0.033 per score point.
Strengths & Weaknesses
GPT-4o
- + Strong general-purpose
- + Good multimodal
- - Less consistent on coding than Claude
Grok 3
- + Strong reasoning
- + X integration
- - Newer model
- - Limited ecosystem
Verdict
GPT-4o wins on both price and performance — $2.50/M input with a benchmark score of 75/100.
For most developers, this is the clear choice between these two models.
Compare with Other Models
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Claude Opus 4
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Claude 3.5 Sonnet
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Claude 3.5 Haiku
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Claude 3 Opus
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Claude 3 Sonnet
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