OpenAI o4-mini vs Reka Flash
Performance benchmarks + pricing comparison — updated April 2026
OpenAI o4-mini
OpenAIUpdated mini reasoning model. Similar pricing to o3-mini with updated capabilities.
| Input | $1.10/M |
| Output | $4.40/M |
| Context | 200K tokens |
| Best For | General reasoning, coding tasks |
| Benchmark | 72/100 |
Reka Flash
RekaReka's fast multimodal model. Compact and efficient for high-volume tasks with vision capability.
| Input | $0.200/M |
| Output | $0.800/M |
| Context | 128K tokens |
| Best For | High-volume tasks, vision + text, cost optimization |
| Benchmark | 40/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | OpenAI o4-mini | Reka Flash | Leader |
|---|---|---|---|
| Overall Score | 72 | 40 | o4-mini leads by 32pts |
| SWE-bench Verified | 66 | 32 | o4-mini leads by 34pts |
| LiveCodeBench | 74 | 42 | o4-mini leads by 32pts |
| HumanEval | 92 | 62 | o4-mini leads by 30pts |
| BigCodeBench | 56 | 26 | o4-mini leads by 30pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | OpenAI o4-mini | Reka Flash | Savings |
|---|---|---|---|
| Small Script (1K lines) | $0.17 | $0.03 | Reka Flash saves $0.14 (82%) |
| Medium Feature (10K lines) | $1.27 | $0.23 | Reka Flash saves $1.04 (82%) |
| Large Project (50K lines) | $6.33 | $1.15 | Reka Flash saves $5.18 (82%) |
| Code Review (5K lines) | $0.30 | $0.06 | Reka Flash saves $0.25 (82%) |
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 |
|---|---|---|---|
| OpenAI o4-mini | 72 | $0.015/pt | Better value |
| Reka Flash | 40 | $0.025/pt | Higher cost per point |
OpenAI o4-mini delivers the best value at $0.015 per score point.
Strengths & Weaknesses
OpenAI o4-mini
- + Improved reasoning at mini price
- - New model, limited data
Reka Flash
- + Multimodal
- + Fast
- - Basic coding
- - Niche provider
Verdict
Reka Flash is cheaper at $0.200/M, but OpenAI o4-mini scores higher on benchmarks (72 vs 40).
Choose Reka Flash for cost-sensitive projects, OpenAI o4-mini when performance matters most.
Compare with Other Models
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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.