Week 42, 2026Published October 8, 2026

AI Model Power Rankings

Haiku 5.5 turns the $0.10 tier into a real fight. A week for cheaper models, not bigger ones. Anthropic's Claude Haiku 5.5 arrived at exactly GPT-6 Luna's $0.10 / $0.50, the same day OpenAI made Luna the default for free ChatGPT users. Google halved its image prices with Nano Banana 2.1, and Mistral put a trillion-parameter model up for testing. Opus 5.5 keeps #1, and Gemini 4 Argon is still out of reach for nearly everyone.

RiserClaude Haiku 5.5

Debuts at #8 overall and #1 for value. Artificial Analysis gives it 43 on its index at max effort, up from 17 for Haiku 4.5, at a quarter of the old price.

FallerGPT-6 Luna

Drops out of the overall top 12. Haiku 5.5 now costs exactly the same, and Anthropic's table has it far ahead on Terminal-Bench 4.0 (39.2% to 16.4%). Being ChatGPT's free default doesn't make Luna the best $0.10 model.

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

Still #1 on Arena WebDev and still the model to beat on hard coding work. Argon has the text board, but you can't buy Argon.

$4 in / $20 out 97
2 — Claude Sonnet 5.5Anthropic

Its second week confirms the debut: top four on WebDev at half Opus 5.5's price. Watch your bills, though, because Artificial Analysis found it unusually token-hungry.

$2 in / $10 out 95
3 — Gemini 4 ArgonGoogle

Still #1 with Arena text voters, and still unavailable outside Google's security partners. It moves up the day Google opens the API.

$2 in / $10 out 94
4 — GPT-6.1 SolOpenAI

#5 in Arena's agent rankings and the default in Codex. OpenAI's best value case near the frontier.

$2 in / $10 out 93
5 ▲1 Claude Fable 5.1Anthropic

Still superb on the hardest problems. Anthropic's own cheaper models now match it on most work.

$10 in / $50 out 91
6 ▼1 GPT-6 AstraOpenAI

Still #2 on WebDev, but with 6.1 shelved, OpenAI's own $2 Sol is the one it's pushing.

$10 in / $50 out 90
7 — Gemini 3.8 FlashGoogle

A text top-10 model at Flash prices. Its price doubles on January 1, and Haiku 5.5 now undercuts it.

$0.75 in / $3.75 out 89
8 NEW Claude Haiku 5.5Anthropic

Scores 43 on the Artificial Analysis index at max effort, at $0.10 / $0.50. The small-model story of the month.

$0.1 in / $0.5 out 88
9 ▼1 Muse Spark 1.3Meta

Pleasant to talk to, but slipping as the 5.5 and 6.1 releases pile up above it.

$1.25 in / $4.25 out 86
10 ▼1 Kimi K3Moonshot AI

Still the strongest model from outside the US frontier labs. A quiet week.

Not published 85
11 ▼1 GLM-5.3Z.ai · open

Still the best-proven open-weight model. Mistral Large 4's weights, due by the end of October, are its next real challenge.

Not published 84
12 ▼1 Grok 4.7xAI

No new model from xAI, and the field keeps moving up around it.

$2 in / $6 out 82

02Coding

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

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

Still #1 on Arena WebDev, ahead of GPT-6 Astra. The default pick for open-ended coding.

$4 in / $20 out 98
2 — Claude Sonnet 5.5Anthropic

Third on WebDev and ahead of Opus 5.5 on Terminal-Bench 4.0 by Anthropic's numbers. The pick for well-scoped fixes at half the price.

$2 in / $10 out 94
3 — GPT-6.1 SolOpenAI

The default in Codex. Most of Astra's coding for a fifth of the price.

$2 in / $10 out 93
4 — GPT-6 AstraOpenAI

#2 on WebDev and #1 on Image-to-WebDev. Still strong when the job means driving a terminal for hours.

$10 in / $50 out 92
5 — Claude Fable 5.1Anthropic

#2 on Image-to-WebDev. Excellent code, but two cheaper Anthropic models do most jobs as well.

$10 in / $50 out 90
6 — Gemini 4 ArgonGoogle

Google's own table puts it behind Opus 5.5 on Terminal-Bench 4.0, and it sits outside the WebDev top five. Coding isn't where it wins.

$2 in / $10 out 88
7 — Kimi K3Moonshot AI

Still a popular pick for cheap coding agents.

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

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

Not published 83
9 NEW Claude Haiku 5.5Anthropic

Anthropic says 39.2% on Terminal-Bench 4.0. Independent runs land nearer 33–35%, which is still plenty for cheap sub-agents.

$0.1 in / $0.5 out 81

03Best Value

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

#Movement±ModelPrice / 1M tokensScore
1 NEW Claude Haiku 5.5Anthropic

$0.10 / $0.50 under 100K tokens, and Artificial Analysis ranks it second of 182 models in its price class. Mind the 5x jump above 100K.

$0.1 in / $0.5 out 95
2 ▼1 Gemini 3.8 FlashGoogle

Top-10 text quality at Flash prices until January. Then it doubles.

$0.75 in / $3.75 out 94
3 ▼1 GPT-6.1 SolOpenAI

Near-Astra coding at $2 / $10, with cached input at $0.10.

$2 in / $10 out 93
4 ▼1 Claude Sonnet 5.5Anthropic

Near-Opus coding at $2 / $10, but its heavy token use eats into the savings.

$2 in / $10 out 91
5 ▼1 GPT-6 LunaOpenAI

Same $0.10 / $0.50 as Haiku 5.5, but the independent evidence favours Anthropic's model. Its new Decisions API is worth a look for extraction jobs.

$0.1 in / $0.5 out 89
6 ▼1 Muse Spark 1.3Meta

Strong conversation at $1.25 / $4.25.

$1.25 in / $4.25 out 87
7 ▼1 Qwen3.8-FlashAlibaba

$0.15 / $0.47 with good multilingual skills. Qwen 4 is still 'very soon'.

$0.15 in / $0.47 out 85
8 ▼1 Mercury 2.5Inception

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

$0.2 in / $0.75 out 79

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. Read its custom license before you build on it.

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

Level with GLM-5.3 on Arena, on fewer votes. Mistral Large 4's weights later this month are the next test for both.

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 leads the text-to-image board, and Nano Banana 2.1 didn't close the gap.

— 97
2 — MAI-Image 2.6Microsoft AI

Microsoft's in-house model stays just ahead of Google's new release.

— 88
3 NEW Nano Banana 2.1Google

Debuts at #5 on text-to-image and #4 for multi-image editing, at about half Nano Banana 2's price. The best pick for editing in chat.

— 87
4 ▼1 Reve 2.1Reve

Pushed down a place by Google's newcomer. Still the indie favourite for aesthetics.

— 85
5 ▼1 Grok Imagine Image 2.0xAI

Still top-tier on its low setting.

— 83
6 — Seedream 5.0 ProByteDance

Powers the CapCut/Dreamina creator ecosystem.

— 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 still 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, still 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 — Grok Imagine Video 1.5xAI

Top five in agent mode. Fast and fun.

— 87
6 — Seedance 2.5ByteDance

Near the top of Artificial Analysis's video board. Still the best realistic human motion for creators.

— 86
7 — Wan 3.0Alibaba

Leads Artificial Analysis's text-to-video board, even though Arena voters rank it lower. Still the tinkerer's pick.

— 84
8 — Runway Gen-4.5Runway

Professionals still choose it for camera control.

— 82

The Wire · what happened this week

  1. Anthropic releases Claude Haiku 5.5 at $0.10 / $0.50 per million tokens for prompts under 100K, about 75% cheaper than Haiku 4.5 on average by Anthropic's count. It keeps a 1M-token context window.

  2. GPT-6 reaches every ChatGPT user. Paid plans get Sol, and Free and Go users get Luna from October 8, along with a new 'Intelligent UI' that mixes text with charts and widgets.

  3. Google ships Nano Banana 2.1 at roughly half the price of Nano Banana 2. It debuts at #5 on LMArena's text-to-image board and #4 for multi-image editing.

  4. Mistral opens a public API preview of Mistral Large 4, a mixture-of-experts model of about a trillion parameters. The open weights are promised by the end of October, but the license isn't published yet.

  5. OpenAI launches a Decisions API in beta, built on GPT-6 Luna, for turning text and images into typed answers. OpenAI says it is 10x faster than its Responses API.

  6. A week after launch, testers report that Gemini 4 Argon still isn't publicly callable and is missing from Google's API pricing page. Google has given no date for developers.

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