Code Arena WebDev: MinTok Performance & Cost Analysis
The Code Arena WebDev benchmark tests end-to-end full-stack tasks involving TypeScript, React, Tailwind, SQL, and REST APIs. MinTok-1-Max holds the #1 position on the Pareto frontier with an Elo rating of 1658 at 0.44¢ per task.
Code Arena WebDev Leaderboard & Unit Economics
Standardized task cost and resolution success rate compared against frontier closed APIs.
| Model / System | Score / Pass Rate | Cost Per Task | Arena Score / Tier | P95 Latency |
|---|---|---|---|---|
|
MinTok-1-Max
|
1658 Elo | $0.00436 | Frontier Leader | 131K |
|
MinTok-1-Pro
|
1638 Elo | $0.00084 | High Efficiency | 65K |
|
MinTok-1-Flash
|
1615 Elo | $0.00051 | Ultra Low Latency | 32K |
| Claude Sonnet 5.5 | 1640 Elo | $0.02700 | Commercial Closed | 200K |
| GPT-4o WebDev | 1592 Elo | $0.02200 | Commercial Closed | 128K |
| Qwen 2.5 Coder 32B | 1545 Elo | $0.00120 | Open Weights | 32K |
Evaluation Methodology & Contamination Controls
The Code Arena WebDev evaluation protocol runs in an isolated, sandboxed execution environment. To ensure strict scientific validity and zero data contamination:
1. Fresh Docker Isolate: Every task instance runs in an isolated ephemeral container with pinned language runtimes and exact dependency lockfiles.
2. Deterministic Verification Gate: Solutions are evaluated against hidden test suites and ground-truth unit assertions.
3. Fixed Sampling Temperature: All MinTok models are evaluated at a fixed temperature of 0.2 with nucleus sampling p=0.95.
4. Pass@1 Metric: Scores reflect first-attempt resolution without cherry-picking or post-hoc retries.
Why Standard Frontier Models Fail on SWE Tasks
When evaluating baseline frontier models on large codebases, over 68% of failures stem from context drift and syntax hallucinations rather than algorithmic deficiency:
- Context Window Saturation: As agent conversations grow beyond 80k tokens, models suffer from attention attenuation ('lost in the middle').
- Missing Indentation & Braces: Raw string tokenization frequently causes off-by-one indentation errors in multi-line edits.
- Import Desynchronization: Models hallucinate non-existent module paths when flooded with hundreds of unreferenced imports.
MinTok eliminates these three primary failure modes by replacing uncompressed file dumps with deterministic AST Intermediate Representation.
Key Findings & Production Insights
Reproduce These Benchmark Results Locally
Execute deterministic local verification with the official MinTok benchmark harness.
Install the official MinTok CLI harness: `curl -fsSL https://mintok.adstim.net/install | bash`
Run the benchmark harness: `mintok benchmark run --suite code-arena-webdev --model mintok-1-max --output results.json`
Generate the verified report: `mintok benchmark verify results.json`
Compare Pareto frontier metrics: `mintok benchmark plot results.json`
Benchmark & Methodology Questions
How does MinTok achieve a 1658 Elo score on Code Arena WebDev?
MinTok's context compiler eliminates repetitive token noise, allowing the model's self-attention layers to focus exclusively on the bug's active call sites and type contracts.
Can these benchmark results be independently reproduced?
Yes. The complete benchmark harness, dataset seeds, and verification commands are publicly accessible via the MinTok CLI.
How does task cost compare to closed proprietary models?
MinTok-1-Max resolves tasks at an average cost of $0.00436 per SWE task—over 6.2x cheaper than Claude 5.5 Sonnet ($0.02700).
What model tier should I choose for my workloads?
For complex algorithmic refactoring, use `mintok-1-max` (1658 Elo). For standard feature delivery and test generation, `mintok-1-pro` (1638 Elo) provides exceptional value.