Claude Opus 4 vs Reka Flash
Performance benchmarks + pricing comparison — updated April 2026
Claude Opus 4
AnthropicAnthropic's most powerful model. Best for complex reasoning and challenging coding tasks.
| Input | $15.00/M |
| Output | $75.00/M |
| Context | 200K tokens |
| Best For | Complex architecture decisions, debugging hard bugs, research |
| Benchmark | 86/100 |
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 | Claude Opus 4 | Reka Flash | Leader |
|---|---|---|---|
| Overall Score | 86 | 40 | Claude Opus 4 leads by 46pts |
| SWE-bench Verified | 84 | 32 | Claude Opus 4 leads by 52pts |
| LiveCodeBench | 88 | 42 | Claude Opus 4 leads by 46pts |
| HumanEval | 96 | 62 | Claude Opus 4 leads by 34pts |
| BigCodeBench | 76 | 26 | Claude Opus 4 leads by 50pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | Claude Opus 4 | Reka Flash | Savings |
|---|---|---|---|
| Small Script (1K lines) | $3.08 | $0.03 | Reka Flash saves $3.05 (99%) |
| Medium Feature (10K lines) | $23.29 | $0.23 | Reka Flash saves $23.06 (99%) |
| Large Project (50K lines) | $116.44 | $1.15 | Reka Flash saves $115.29 (99%) |
| Code Review (5K lines) | $6.02 | $0.06 | Reka Flash saves $5.96 (99%) |
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 |
|---|---|---|---|
| Claude Opus 4 | 86 | $0.174/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
Claude Opus 4
- + Best at complex reasoning
- + Strong system design
- + Excellent debugging
- - Expensive for bulk tasks
- - Slower response times
Reka Flash
- + Multimodal
- + Fast
- - Basic coding
- - Niche provider
Verdict
Reka Flash is cheaper at $0.200/M, but Claude Opus 4 scores higher on benchmarks (86 vs 40).
Choose Reka Flash for cost-sensitive projects, Claude Opus 4 when performance matters most.
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 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.
Claude 3 Haiku
AnthropicCheapest Claude model. Fast responses for simple tasks and basic coding.