Week 40, 2026Published September 26, 2026

AI Model Power Rankings

Opus 5.5 confirms it: first on the Arena voter boards, too. A quieter week after last Tuesday's pile-up, but the first real votes are in. Claude Opus 5.5 went straight to #1 on LMArena's text and WebDev boards, and GPT-6 Sol proved its value case with voters. Google, meanwhile, says Gemini 4 is in post-training and coming 'as soon as possible'. We'll believe the date when we see it.

RiserGPT-6 Sol

Arena WebDev voters put it level with Claude Opus 5 at less than half the price. Its value argument is real, not just OpenAI's word.

FallerGPT-6 Astra

Lost the WebDev crown to Opus 5.5 within days, and sits outside the top 25 on the text board. Still elite for automation, but no longer the default.

01Power Rankings

The best general-purpose AI models right now, with quality, price and momentum rolled into one score.

#Movement±ModelPrice / 1M tokensScore
1 — Claude Opus 5.5Anthropic

Now #1 with the voters as well as the benchmarks, on LMArena's text and WebDev boards. The text lead is provisional on a small sample, but nothing has knocked it off yet.

$4 in / $20 out 97
2 — Claude Fable 5.1Anthropic

Still in the text top five and #3 on WebDev. Brilliant, but hard to justify at 2.5x Opus 5.5's price.

$10 in / $50 out 95
3 — GPT-6 AstraOpenAI

Lost WebDev #1 to Opus 5.5 and trails on the text board. It still leads on automation work, which is where it earns its price.

$10 in / $50 out 93
4 — GPT-6 SolOpenAI

Voters rank it alongside Claude Opus 5 for web coding at a fraction of the cost. The best-value model near the frontier.

$2 in / $10 out 92
5 — Gemini 3.8 FlashGoogle

Holding a text top-10 spot for 75 cents per million input tokens. The price doubles on January 1.

$0.75 in / $3.75 out 90
6 — Muse Spark 1.3Meta

The model is fine. Meta's Muse agent being locked out of Amazon is a product problem, not a quality one.

$1.25 in / $4.25 out 89
7 — Gemini 3.1 ProGoogle

Still in preview and outranked by its Flash sibling. Google says Gemini 4 is in post-training, which is the upgrade this slot needs.

$2 in / $12 out 87
8 — Kimi K3Moonshot AI

Top 10 on WebDev and level with Gemini 3.1 Pro on the text board. Still the strongest model from outside the US frontier labs.

Not published 86
9 — Grok 4.7xAI

Its first WebDev showing is respectable, just outside the top 12. Good value, but not in the lead pack.

$2 in / $6 out 84
10 — GLM-5.3Z.ai · open

Still the best-proven open-weight model, but Xiaomi's MiMo now matches it on the text board.

Not published 84
11 — GPT-6 LunaOpenAI

Early testers report it keeping pace with Sol on some coding evals at a fraction of the price. We'd like independent numbers before we move it up.

$0.1 in / $0.5 out 82
12 — Qwen3.8-FlashAlibaba

Cheap and multilingual. Alibaba's voice price cuts this week make its wider stack even better value.

$0.15 in / $0.47 out 78

02Coding

For developers and 'vibe coders': writing, fixing and shipping real software.

#Movement±ModelPrice / 1M tokensScore
1 — Claude Opus 5.5Anthropic

#1 on Arena WebDev, well clear of GPT-6 Astra, and top of Terminal-Bench 4.0. The default pick for coding.

$4 in / $20 out 98
2 — GPT-6 AstraOpenAI

Now #2 on WebDev and still the strongest when the job involves driving a terminal.

$10 in / $50 out 94
3 — Claude Fable 5.1Anthropic

#3 on WebDev. Excellent, but Opus 5.5 is better and cheaper for most code.

$10 in / $50 out 93
4 — GPT-6 SolOpenAI

Enters the WebDev top five on real votes, on par with Claude Opus 5. Live in Codex and GitHub Copilot.

$2 in / $10 out 91
5 — Kimi K3Moonshot AI

Top 10 on WebDev with a big vote count behind it. A popular choice for cheap coding agents.

Not published 84
6 — GLM-5.3Z.ai · open

The open-weight coding pick, though MiMo-V2.6-Pro scores level with it on WebDev.

Not published 83
7 — Gemini 3.8 FlashGoogle

Great for quick edits and autocomplete-style work. Wait for Gemini 4 if you need an agent.

$0.75 in / $3.75 out 82
8 — Grok 4.7xAI

Edges out 4.6 on WebDev, but 38% on Terminal-Bench 4.0 still rules it out for serious agents.

$2 in / $6 out 75

03Best Value

The most capability per dollar. If you're building an app or watching a budget, start here.

#Movement±ModelPrice / 1M tokensScore
1 — Gemini 3.8 FlashGoogle

Top-10 text quality at Flash prices, so enjoy it before January.

$0.75 in / $3.75 out 95
2 ▲1 GPT-6 SolOpenAI

Arena voters now back up the pitch: Opus 5-level web coding for a fifth of Astra's price.

$2 in / $10 out 93
3 ▼1 GPT-6 LunaOpenAI

$0.10 / $0.50. Early coding results look strong, but they're mostly OpenAI's and testers' numbers so far.

$0.1 in / $0.5 out 92
4 — Muse Spark 1.3Meta

Strong conversation at $1.25 / $4.25, and the Contributor tier is even cheaper.

$1.25 in / $4.25 out 88
5 — Qwen3.8-FlashAlibaba

$0.15 / $0.47 with multilingual strength, and Alibaba's audio APIs just got much cheaper too.

$0.15 in / $0.47 out 86
6 — Mercury 2.5Inception

Very fast diffusion text generation at $0.20 / $0.75.

$0.2 in / $0.75 out 80
7 — Grok 4.7xAI

Its $6 output tokens are among the cheapest at this quality level.

$2 in / $6 out 78

04Open-Weight Watch

Models you can download, run privately and customise.

#Movement±ModelPrice / 1M tokensScore
1 — GLM-5.3Z.ai · open

Still the strongest open-weight model on the most evidence. It has a custom license, so read it.

Not published 91
2 — MiMo-V2.6-ProXiaomi · open

Its first Arena scores put it level with GLM-5.3 on both text and WebDev. Fewer votes so far, but a serious debut.

Not published 88
3 — Ternary Bonsai 2 27BPrismML · open

Apache 2.0 and small enough for real-world hardware.

Not published 78

05Image Generation

Making pictures from text, based on LMArena text-to-image votes plus our hands-on notes.

#Movement±ModelPrice / 1M tokensScore
1 — GPT Image 2.5OpenAI

Still holds the top three spots on the leaderboard, with the gap unchanged.

— 97
2 — MAI-Image 2.6Microsoft AI

Microsoft's in-house model remains the best non-OpenAI option.

— 88
3 — Reve 2.1Reve

Moves up to fifth on the leaderboard. The indie favourite for aesthetics.

— 85
4 — Grok Imagine Image 2.0xAI

Slipped a place as more votes came in, but still top six on its low setting.

— 83
5 — Gemini 3.1 Flash ImageGoogle

Ranks lower on raw generation, but it's the best for editing an image through conversation.

— 82
6 — Seedream 5.0 ProByteDance

Powers the CapCut/Dreamina creator ecosystem, and Alibaba's Qwen-Image 3.0 Pro is now level with it.

— 80

06Video Generation

Text-to-video, and what to use now that Sora is gone.

#Movement±ModelPrice / 1M tokensScore
1 — Gemini Omni 1.1 FlashGoogle

Google holds the top two text-to-video spots with Omni Flash and its 1.1 update.

— 95
2 — Veo 3.1Google

The safest all-rounder, with native audio and 4K.

— 92
3 — FLUX 3 VideoBlack Forest Labs

Holds #3 on the leaderboard, though on a small vote count.

— 90
4 — Kling 3.0Kuaishou

The value king at about 11–14 cents per second, plus storyboard mode.

— 89
5 ▲1 Grok Imagine Video 1.5xAI

Up to #4 in agent mode. Fast and fun.

— 87
6 ▼1 Seedance 2.5ByteDance

Dipped below its own predecessor as votes piled in. Still the best realistic human motion for creators.

— 86
7 — Wan 3.0Alibaba

Dropped out of the top five as its vote count doubled. Still the tinkerer's pick.

— 83
8 — Runway Gen-4.5Runway

Professionals still choose it for camera control.

— 82

The Wire · what happened this week

  1. Claude Opus 5.5 debuts at #1 on LMArena's text leaderboard, though on only a couple of thousand votes and inside the margin of error. It also leads WebDev, clear of GPT-6 Astra.

  2. GPT-6 Sol (Max) lands in the WebDev top five, on par with Claude Opus 5 at under half the cost, according to Arena.

  3. Google DeepMind's new chief, Koray Kavukcuoglu, says Gemini 4 is in post-training and will ship 'as soon as possible', well before year-end. No date given.

  4. Reminder: OpenAI's Sora API is now shut down. If you haven't moved your video pipeline yet, start here.

  5. Alibaba launches the five-model Qwen-Audio 3.1 stack and cuts voice API prices: roughly 70% off TTS, 85% off Realtime and up to 95% off speech recognition.

  6. Amazon blocks Meta's Muse agent from shopping on its site, citing unauthorised access. It's the latest in Amazon's fight to keep outside AI agents off its store.

Scores are our editorial blend of public leaderboards (LMArena, Artificial Analysis and published benchmarks), price and hands-on use. Read the methodology →