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IFAI

Model rankings

1125 models · 5 boards · 2 sources

WebDev arena · People compare web pages built by two models · Published April 9, 2026

Best web builder
claude-opus-4-6-thinkingAnthropic1,548Score
Best open model
glm-5.1Z.ai1,530Score
Best from China
glm-5.1Z.ai1,530Score
Most voted
claude-sonnet-4-5-20250929Anthropic18,527Votes
Top three by Score
1claude-opus-4-6-thinkingAnthropic1,548
2glm-5.1Z.ai1,530
3claude-sonnet-4-6Anthropic1,521
Top three open models
1glm-5.1Z.ai · #2 overall1,530
2glm-4.7Z.ai · #9 overall1,439
3glm-5Z.ai · #10 overall1,439
This week's changes
HappyHorse-1.0Video · #1New
glm-5.1Coding · #2New
Eleven v3Speech · #2New
Speech 2.8 HDSpeech · #4New
RankChangeModelScore95% intervalVotesPrice $/M
1—claude-opus-4-6-thinkingClosedAnthropic · 1 more variant1,548±114,015—
2—claude-sonnet-4-6ClosedAnthropic1,521±96,979—
3—claude-opus-4-5-20251101-thinking-32kClosedAnthropic1,490±713,065—
4—claude-opus-4-5-20251101ClosedAnthropic1,466±714,517—
5—gpt-5.4-high (codex-harness)ClosedOpenAI1,457±171,485—
6—gemini-3.1-pro-previewClosedGoogle1,456±95,819—
7—gemini-3-proClosedGoogle1,438±717,157—
8▲ 1gpt-5.4-medium (codex-harness)ClosedOpenAI1,437±161,449—
9▼ 1gemini-3-flashClosedGoogle · 1 more variant1,436±713,265—
10—gpt-5.3-codex (codex-harness)ClosedOpenAI1,407±122,971—
11—gpt-5.2ClosedOpenAI1,403±171,461—
12▲ 4grok-4.20-beta-0309-reasoningClosedxAI1,393±113,156—
13▼ 1gpt-5-mediumClosedOpenAI1,393±133,755—
14▼ 1gpt-5.1-mediumClosedOpenAI1,390±96,124—
15▼ 1claude-sonnet-4-5-20250929-thinking-32kClosedAnthropic1,388±615,742—
16▲ 2gpt-5.4-mini-highClosedOpenAI1,388±151,651—
17▼ 2claude-sonnet-4-5-20250929ClosedAnthropic1,386±618,527—
18▼ 1claude-opus-4-1-20250805ClosedAnthropic1,385±98,573—
19—gpt-5.1ClosedOpenAI1,339±712,870—
20—gpt-5.2-codexClosedOpenAI1,335±87,763—
21—gpt-5.1-codexClosedOpenAI1,329±96,227—
22—claude-haiku-4-5-20251001ClosedAnthropic1,315±616,929$2.0
23—gpt-5.1-codex-miniClosedOpenAI1,239±171,444—
24—gemini-3.1-flash-lite-previewClosedGoogle1,237±105,394$0.56
25—grok-4-1-fast-reasoningClosedxAI1,233±96,916—
26—grok-4.1-thinkingClosedxAI1,207±201,209—
27—gemini-2.5-proClosedGoogle1,202±133,300—
28—mercury-2ClosedInception1,166±23951—
29—grok-4-fast-reasoningClosedxAI1,148±23936—
30—grok-code-fast-1ClosedxAI1,139±22984—

Intelligence over time

Each maker's best model at the time on the Artificial Analysis Intelligence Index, by the month it was released.

Gained most · Anthropic +57.2Highest now · Anthropic 64.6Gap between highest and lowest 18.1 ptsTime range Nov 2025 – Nov 2026
64.6Anthropic60.0Google56.9OpenAI50.1Meta46.5Kimi

Arena data comes from the leaderboard dataset it publishes on Hugging Face (CC BY 4.0). Only each board's overall leaderboard is used; scores and ranks are unchanged. dataset · CC BY 4.0

Artificial Analysis data comes from its API (artificialanalysis.ai). Scores are unchanged; ranks follow the scores. artificialanalysis.ai

Open or closed follows the license Arena gives; prices and Artificial Analysis intelligence show only where model names match, otherwise “—”.