Week 41, 2026Published October 1, 2026

AI Model Power Rankings

Google's Argon takes the text crown, but Opus 5.5 keeps ours. Three new models, all at $2 / $10 per million tokens. Gemini 4 Argon went straight to #1 on LMArena's text board, though almost nobody can use it yet. Claude Sonnet 5.5 and GPT-6.1 Sol both landed in the WebDev top five. And OpenAI shelved GPT-6.1 Astra after it failed its own safety tests. Opus 5.5 holds #1 here: still top for coding, and you can actually buy it.

RiserClaude Sonnet 5.5

Debuts at #2. It outscores Fable 5.1 and GPT-6 Astra on Artificial Analysis's index and lands in the Arena WebDev top four, all at half Opus 5.5's price.

FallerClaude Fable 5.1

Down four places. Anthropic's own Sonnet 5.5 now scores higher on the independent index for a fifth of the price, which leaves Fable a hard sell outside the most demanding agent work.

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 well ahead on SWE-Bench Pro. Argon took the text board, but Opus 5.5 is the best model you can actually use today.

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

Scores 56 on Artificial Analysis's index, above Fable 5.1 and GPT-6 Astra, at $2 / $10. For most people it is the new sensible default.

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

#1 on Arena's text board and the lowest hallucination rate tested. It would rank higher if you could use it; for now, almost nobody can.

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

Replaces GPT-6 Sol a week after launch. OpenAI says it nearly matches Astra on coding for a fifth of the price, and Arena's WebDev voters put it in the top five.

$2 in / $10 out 93
5 ▼2 GPT-6 AstraOpenAI

Powers OpenAI's new Dots agents, but its 6.1 upgrade was shelved and the cheaper Sol now matches it on most coding tests.

$10 in / $50 out 91
6 ▼4 Claude Fable 5.1Anthropic

Still excellent, but Sonnet 5.5 beats it on the independent index at a fifth of the price.

$10 in / $50 out 91
7 ▼2 Gemini 3.8 FlashGoogle

Still a top-tier fast model at 75 cents in. The price doubles on January 1.

$0.75 in / $3.75 out 89
8 ▼2 Muse Spark 1.3Meta

Good conversationalist at a fair price. Three new $2 / $10 models above it make it look less special.

$1.25 in / $4.25 out 87
9 ▼1 Kimi K3Moonshot AI

Still the strongest model from outside the US frontier labs, but this week's launches widened the gap.

Not published 85
10 — GLM-5.3Z.ai · open

The best-proven open-weight model. A Flash version is reportedly out, but we haven't seen independent results.

Not published 84
11 ▼2 Grok 4.7xAI

Good value, and xAI's agent products are growing. The model itself is a step behind the frontier.

$2 in / $6 out 83
12 ▼1 GPT-6 LunaOpenAI

Very cheap and fast. We still want independent coding numbers before moving it up.

$0.1 in / $0.5 out 82

02Coding

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

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

Holds #1 on Arena WebDev and leads SWE-Bench Pro clearly over Sonnet 5.5. Still the default for serious coding.

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

Arena WebDev top four on debut, and it beats Opus 5.5 on Terminal-Bench 4.0 in both Anthropic's and Artificial Analysis's runs. Results vary by harness, though.

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

The new default in Codex, with an Ultrafast option. OpenAI says it matches Astra on DeepSWE at about a fifth of the cost per task.

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

Still strong at driving a terminal, but Sol 6.1 now does most of the same work for much less.

$10 in / $50 out 92
5 ▼2 Claude Fable 5.1Anthropic

Excellent code, but two cheaper Anthropic models are now at least as good for most jobs.

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

Google claims 77.9% on DeepSWE, but it's only #8 on Arena WebDev, and you can't use it yet.

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

Still a popular pick for cheap coding agents.

Not published 84
8 ▼2 GLM-5.3Z.ai · open

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

Not published 83
9 ▼2 Gemini 3.8 FlashGoogle

Fine for quick edits and autocomplete-style work. Not the one to run an agent on.

$0.75 in / $3.75 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 — Gemini 3.8 FlashGoogle

Top-tier quality at Flash prices, until January.

$0.75 in / $3.75 out 95
2 NEW GPT-6.1 SolOpenAI

Near-Astra coding at $2 / $10, and cached input is now just $0.10 per million tokens.

$2 in / $10 out 94
3 NEW Claude Sonnet 5.5Anthropic

Same price as Sol, higher on the independent index, and Anthropic says it uses fewer tokens per task than Sonnet 5.

$2 in / $10 out 92
4 ▼1 GPT-6 LunaOpenAI

$0.10 / $0.50. Still the cheapest serious option, though most of the evidence is OpenAI's.

$0.1 in / $0.5 out 91
5 ▼1 Muse Spark 1.3Meta

Strong conversation at $1.25 / $4.25.

$1.25 in / $4.25 out 88
6 ▼1 Qwen3.8-FlashAlibaba

$0.15 / $0.47 with good multilingual skills. Qwen 4 is due 'very soon', according to Alibaba.

$0.15 in / $0.47 out 86
7 ▼1 Mercury 2.5Inception

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

$0.2 in / $0.75 out 80
8 ▼1 Grok 4.7xAI

Its $6 output tokens are still 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. Read its custom license.

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

Level with GLM-5.3 on Arena text and WebDev as its vote count grows.

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

Apache 2.0 and small enough for real-world hardware. DeepSeek V4.1 Pro and Qwen 4 are both announced but not out.

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

The Sunburst version still leads the text-to-image board. No serious challenger this week.

— 97
2 — MAI-Image 2.6Microsoft AI

Still the best non-OpenAI option.

— 88
3 — Reve 2.1Reve

Holding fifth. The indie favourite for aesthetics.

— 85
4 — Grok Imagine Image 2.0xAI

Steady in the top six on its low setting.

— 83
5 — Gemini 3.1 Flash ImageGoogle

Not the best at raw generation, but still the best for editing an image through conversation.

— 82
6 — Seedream 5.0 ProByteDance

Powers the CapCut/Dreamina ecosystem, level with Alibaba's Qwen-Image 3.0 Pro.

— 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

Holding #4 in agent mode, close behind Flux.

— 87
6 — Seedance 2.5ByteDance

Still the best realistic human motion for creators.

— 86
7 — Wan 3.0Alibaba

Outside the top five, but 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. Arena adds Claude Sonnet 5.5 and GPT-6.1 Sol to its WebDev board. Both land in the top five; Claude Opus 5.5 is still #1.

  2. Google announces Gemini 4 Argon. Its high setting takes #1 on Arena's text board on about 4,900 votes but only #8 on WebDev. Access is limited to a cyber-defender program for now; no date for everyone else.

  3. The FTC confirms it is investigating OpenAI, Anthropic and other AI companies over possible risks to consumers, including agents that go beyond their instructions.

  4. OpenAI DevDay: GPT-6.1 Sol arrives a week after GPT-6 Sol at the same $2 / $10. OpenAI says it nearly matches Astra on coding at a fifth of the price.

  5. OpenAI also launches Dots, always-on agents running on GPT-6 Astra, included in the Pro and Business Premium plans.

  6. OpenAI cancels the planned October release of GPT-6.1 Astra after internal tests found it was deceptive and acted without approval.

  7. Anthropic releases Claude Sonnet 5.5 at Sonnet 5's $2 / $10. Anthropic says it's over 30% faster and up to 30% cheaper per task.

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