RL environments and AI benchmarks, cataloged daily.
Who builds RL environments, who funds them and how models score, rebuilt every morning from public sources. Every placement links to the line on the company's own site that puts it there.
Today in RL
October 20, 2026 was a score-refresh and selective expansion day. The headline move is Gemini 4 Argon surging from rank 7 to rank 5 with a nearly 2-point score jump, the largest single-model gain at the top of the leaderboard. Claude Haiku 5.5 took the sharpest drop, falling ten ranks from 16th to 26th. Five new benchmarks were added and 13 existing leaderboards were refreshed.
Google
Gemini 4 Argon Jumps Two Spots to #5
Google's Gemini 4 Argon posted the biggest score gain among top-tier models today, climbing from 80.97 to 82.93 and moving up two positions from rank 7 to rank 5. It now sits ahead of Claude Sonnet 5.5 and Claude Fable 5, marking Google's strongest showing in the upper tier in recent weeks.
Anthropic
Claude Haiku 5.5 Drops Ten Ranks
Anthropic's Claude Haiku 5.5 saw the steepest single-day decline in the top 30, falling from rank 16 (70.04) to rank 26 (67.23) — a drop of nearly 3 points. Claude Opus 4.7 similarly fell from rank 29 to rank 36, suggesting a broad recalibration of Anthropic's mid-tier models.
Anthropic
Anthropic Holds the Top Spot as Claude Opus 5.5 Gains
Claude Opus 5.5 extended its lead at rank 1, ticking up from 86.56 to 86.66. The gap between first and second place (GPT-6.1 Sol at 84.21) now stands at roughly 2.5 points, its widest margin in recent sessions.
MiniMax
MiniMax M3.1 Flash Debuts
MiniMax's M3.1 Flash enters the leaderboard with an overall score of 67.1, placing it in the competitive mid-tier cluster alongside GLM-5.3 and Claude Haiku 5.5. This is MiniMax's latest flash-class model, competing in a densely contested range between 66 and 68 points.
Inception's Mercury 3 Makes Its Debut
Mercury 3 from Inception joins the field today without an initial overall score posted, making it one to watch as evaluation results come in. Inception continues to expand its Mercury model family.
The catalog
The top of each list. Every list has a full table, sortable and filterable.
Models
By overall score
- 1Claude Opus 5.586.66
- 2GPT-6.1 Sol84.21
- 3GPT-6 Astra84.05
- 4Claude Fable 5.183.24
- 5Gemini 4 Argon82.93
RL environment companies
By tier, X reputation, benchmarks built
Benchmarks
S tier: the ones frontier labs report
Infrastructure companies
By tier, X reputation, benchmarks built
Browse by domain
All 91 domains and labelsOn the map. Our domains: every company and benchmark sits in one, placed by a quote from its own site or paper.
- Coding
- Enterprise work
- Health and bio
- Computer use
- Math
- Science
- Finance
- Legal
- Media
- Security
- Games
- Robotics
- Multi-domain
- Chip design
Directory labels. Tags other catalogs put on entries. Not domains on the map.
- Agentic
- Multimodal
- Reasoning
- Long-Horizon
- Knowledge
- Safety
- Decision Models
- Multilingual
- Long Context
- Video
The other 67 pages
More pages for domains on the map
- Business Enterprise work
- Biomedicine Health and bio
- Private Codebases Coding
- Software Engineering Coding
- Multi-Domain Multi-domain
- Biology Health and bio
- Robotics Robotics
- Gui Computer use
- Creative Media
- Materials Science
- Creative Media Media
- Chemistry Science
- Spreadsheets Enterprise work
- Security Security
- Browser Computer use
- Text TO Sql Coding
- Games Games
- Image Generation Media
- Video Generation Media
More directory labels
- Retrieval
- Vision
- Multimodal Understanding
- Alignment
- Behavioral
- Tool Use
- Generalization
- Speech
- Spatial Reasoning
- Data
- Factuality
- Instruction Following
- Language
- Document Understanding
- Translation
- Education
- Domain
- Geospatial
- General Knowledge
- Search
- Machine Learning
- ML
- Classification
- Inference
- Question Answering
- Korean
- Aerospace
- Efficiency
- Language-understanding
- Summarization
- Tabular
- Uncategorized
- Writing
- Human-preference
- Mobile
- Structured Output
- Document-ai
- Ocr
- Climate
- Energy
- Meta
- Truthfulness
- Weather
- Self Improvement
- Autonomy
- Openness
- Professional
- Rlhf
The map
Every company we track, placed in the domain it leads with. Click one for the line on its own website that puts it there.
Every company we track, whatever it sells, placed in the domain it leads with. Companies that cover many domains with none leading sit in the middle.
Domains
The galaxy could not load. See every vendor on the board.
How to read it
A company, in the domain its own site leads with. The logo is its own; the glow is what it mainly sells.
Also covers: a ring at a domain's edge for a company that leads with another domain but also covers this one. A faint line runs to where it leads.
Dots around it: the other things it sells. Hollow while it is still expanding into them.
Click any star for the lines from its own website that put it there.
How to read it
A benchmark, in the domain most of its tasks are in. The logo is who built it.
Also covers: a benchmark mostly about another domain that also tests this one.
Lineage: a line from a benchmark to one built on it: its next version, a subset, an extension, or an index that combines it.
Click any star for the line from its own page or paper that put it there, and to light its lineage.
Research
All research posts- Five people, about $300k, synthetic RL environments: Ultramarine 1 Flash beats Claude Fable 5 on 4 of 6 knowledge-work benchmarks
- Why expert-data vendors are becoming research labs: 14 studies from four vendors in 40 days
- Mercor hired the first authors of LoRA, τ²-bench, SciCode, and APEX-Agents. micro1 is offering up to $4M for a robotics research director
- 2,209 agents rewrote a coding harness in Rust in two weeks. The reward was a parity check in a fresh sandbox
In short
RL environments, in short
- What are RL environments?
- A simulated workplace where an AI agent practises a task (a code repository, a browser, business software) and an automatic grader scores each attempt. Labs train on thousands of these attempts. Bought to improve models. More in the glossary.
- Who sells RL environments?
- 70 companies we track sell RL environments, evals or verifiers, among them AfterQuery, HUD, Mercor, Symbal, Turing, Align AI, BenchFlow and Cua. Each is placed by a line from its own website; see them all on the RL environments page.
- What is the difference between an RL environment and a benchmark?
- An RL environment is for training: a model practises in it and a grader scores each attempt. A benchmark or eval is for measuring: a fixed, held-out set of tasks with fixed scoring, used to measure and compare models. Never trained on, so the score means something. Used to measure models.
- What are the main AI benchmarks for agents and LLMs?
- Among the most referenced: Humanity's Last Exam, Terminal-Bench 2.1, SWE-bench Verified, AIME 2025, Terminal-Bench Hard, GPQA Diamond, GPQA-D and MMLU-Pro. See the full AI benchmarks list.
- Where does this data come from?
- Every placement is read from the company's own website or the benchmark's own page or paper, quoted and linked, and the catalog is rebuilt daily from public sources. How the data is built.
From the builders
What vendors are posting
The newest post on X from each RL environment vendor we track, refreshed with every build. Scroll the feed for more. How we find their accounts.