Who ranks #1 on the Cybergym leaderboard?
As of August 31, 2026, GLM-5.3 by Z AI ranks #1 on Cybergym at 84.5%. API pricing is $1.40/M input and $4.40/M output.
As of August 31, 2026, GLM-5.3 is #1 for Cybergym at 84.5%. Ranked by the Cybergym score 13 models in this index have a published Cybergym score. Cybergym leaderboard: rank models by Cybergym next to live API token prices.
13 models. Left is cheaper. Up is a higher score. The line is the best score you can buy at each price โ a dot under it is a worse deal than something on the line.
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As of August 31, 2026, GLM-5.3 by Z AI is #1 for Cybergym at 84.5%. Ranked by the Cybergym score This board also tracks Cybergym. Next on the same board: DeepSeek-V4-Pro-0813 and Claude Mythos 5. This cybergym leaderboard ranks models by Cybergym. Scores come from public evals. Prices are the live API rates in the table above.
Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); Anthropic Claude API pricing (https://platform.claude.com/docs/en/about-claude/pricing); Gemini API pricing (https://ai.google.dev/gemini-api/docs/pricing)
| Rank | Model | Cybergym | Input /M | Output /M |
|---|---|---|---|---|
| 1 | GLM-5.3 | 84.5% | $1.40 | $4.40 |
| 2 | DeepSeek-V4-Pro-0813 | 83.3% | $1.32 | $3.96 |
| 3 | Claude Mythos 5 | 83.1% | $10.00 | $50.00 |
| 4 | Claude Mythos Preview | 83.1% | $10.00 | $50.00 |
| 5 | GPT-5.5 | 81.8% | $5.00 | $30.00 |
| 6 | Claude Opus 4.8 | 78.8% | $5.00 | $25.00 |
| 7 | DeepSeek-V4-Flash-0731 | 76.7% | $0.44 | $1.32 |
| 8 | Claude Opus 4.6 | 73.8% | $5.00 | $25.00 |
Rank one eval at a time. All LLM benchmarks.
As of August 31, 2026, GLM-5.3 by Z AI ranks #1 on Cybergym at 84.5%. API pricing is $1.40/M input and $4.40/M output.
The current Cybergym ranking as of August 31, 2026 is 1. GLM-5.3 at 84.5%; 2. DeepSeek-V4-Pro-0813 at 83.3%; 3. Claude Mythos 5 at 83.1%.
DeepSeek-V4-Flash-0731 is the cheapest scored model on this cybergym leaderboard at $0.44/M input and $1.32/M output ($1.76 blended). GLM-5.3 still leads Cybergym at 84.5%.
Not automatically. GLM-5.3 leads Cybergym, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh Cybergym against input/output price, context window, and related evals.
Scores and API prices on this page are refreshed from published evals and provider rates. The snapshot is labeled August 31, 2026. Treat it as a current index, not a one-off blog post.
Cybergym is a public LLM eval (the Cybergym score). This page ranks models that have published a score, next to live API prices.
This page is the Cybergym leaderboard. Models are sorted by Cybergym, with input and output token prices on the same row so you can weigh score against cost. Official boards often omit price; that comparison is the point of this index.
Official eval pages own the methodology. This page keeps the published Cybergym score next to live API $/M so you can pick a production SKU, not only a trophy number.