OpenAI o3 vs Reka Flash
Performance benchmarks + pricing comparison — updated April 2026
OpenAI o3
OpenAINext generation reasoning model. Improved coding and math over o1.
| Input | $10.00/M |
| Output | $40.00/M |
| Context | 200K tokens |
| Best For | Advanced coding, complex problem-solving |
| Benchmark | 85/100 |
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 o3 | Reka Flash | Leader |
|---|---|---|---|
| Overall Score | 85 | 40 | o3 leads by 45pts |
| SWE-bench Verified | 82 | 32 | o3 leads by 50pts |
| LiveCodeBench | 88 | 42 | o3 leads by 46pts |
| HumanEval | 96 | 62 | o3 leads by 34pts |
| BigCodeBench | 74 | 26 | o3 leads by 48pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | OpenAI o3 | Reka Flash | Savings |
|---|---|---|---|
| Small Script (1K lines) | $1.55 | $0.03 | Reka Flash saves $1.52 (98%) |
| Medium Feature (10K lines) | $11.50 | $0.23 | Reka Flash saves $11.27 (98%) |
| Large Project (50K lines) | $57.50 | $1.15 | Reka Flash saves $56.35 (98%) |
| Code Review (5K lines) | $2.75 | $0.06 | Reka Flash saves $2.69 (98%) |
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 o3 | 85 | $0.167/pt | Higher cost per point |
| Reka Flash | 40 | $0.025/pt | Better value |
Reka Flash delivers the best value at $0.025 per score point.
Strengths & Weaknesses
OpenAI o3
- + Latest reasoning model
- + Top-tier across all benchmarks
- - Very expensive
- - Slow
Reka Flash
- + Multimodal
- + Fast
- - Basic coding
- - Niche provider
Verdict
Reka Flash is cheaper at $0.200/M, but OpenAI o3 scores higher on benchmarks (85 vs 40).
Choose Reka Flash for cost-sensitive projects, OpenAI o3 when performance matters most.
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
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.