# Top Coding AI this month

> Claude leads at 95%, runner-up 3% across 2 winner-take-all outcomes — refreshed 21 min ago.

URL: https://simplefunctions.dev/odds/codeai
Updated: 2026-06-25T23:20:53.267Z
Category: technology
Status: active
Closes: 2026-06-30

## Headline

- Leader: Claude at 95%
- Runner-up: ChatGPT at 3%
- Outcomes: 2 (winner-take-all)
- Venue: Kalshi (2 contracts)
- 24h volume: $10K

## Bound contracts (2)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| Claude | 95¢ | −1pp | $5K | kalshi | /markets/top-coding-ai-this-month-claude-kalshi-kxcodeai-26jun30-clau |
| ChatGPT | 3¢ | ±0 | $6K | kalshi | /markets/top-coding-ai-this-month-chatgpt-kalshi-kxcodeai-26jun30-chat |

## 30-day trajectory

| Day | Claude | ChatGPT |
|---|---|---|
| 2026-06-02 | 6 | 79 |
| 2026-06-11 | 41 | 47 |
| 2026-06-18 | 32 | 67 |
| 2026-06-25 | 95 | 4 |

_24 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-06-19 · ChatGPT −33pp 67→34¢ · kalshi
- 2026-06-19 · Claude +21pp 32→53¢ · kalshi
- 2026-06-20 · Claude +18pp 53→71¢ · kalshi
- 2026-06-21 · ChatGPT −16pp 27→11¢ · kalshi
- 2026-06-24 · Claude +11pp 85→96¢ · kalshi

## Analysis

This 85% probability indicates market participants believe Claude is most likely to be the top-performing coding AI during June 2026. The assessment reflects Claude's recent improvements in code generation and reasoning tasks. Key factors driving this level include Claude's performance in standardized coding benchmarks, developer adoption patterns across platforms, and how different AI systems rank on tasks like debugging, algorithmic problem-solving, and code quality. The probability would shift based on new benchmark releases, performance data from major AI evaluation firms, or announcements of significant capability updates from competing systems. As June concludes, final performance metrics and community feedback on coding tasks will determine the outcome.

### Key factors

- Claude's standing on public coding benchmarks (HumanEval, MBPP, etc.) relative to GPT-4, Gemini, and other competitors
- Monthly usage volume and developer preference data from major coding platforms (GitHub, LeetCode, Stack Overflow)
- Release dates and capabilities of competing coding AI models during June 2026
- Performance on domain-specific coding evaluations published by AI research organizations
- Community discussion sentiment and reported debugging/code-generation quality across developer forums

## Methodology

Headline is the **leader's price**, not an arithmetic mean — averaging disjoint winner-take-all outcomes is meaningless. Per-outcome prices come from the venue's last-traded mid; cross-venue values are simple means across contracts on each venue.

## How to use this data

- HTML: https://simplefunctions.dev/odds/codeai
- JSON: https://simplefunctions.dev/api/public/odds?slug=codeai

## License

CC-BY-4.0. Attribute "SimpleFunctions" with a link to https://simplefunctions.dev. See https://simplefunctions.dev/legal for terms.