UPDATED NOVEMBER 4, 2026 · TREND-SLOPE RELEASE FORECASTING & CAPABILITY BENCHMARKS

Should You Adopt Today or Wait for the Next Drop?

Naive average release cycles mispredict AI launches by 2 to 4 weeks because they ignore whether a lab is compressing (Google at 14d, OpenAI at 18d, Meta at -24.5d/drop) or stretching (xAI at +4d/drop). Below is the live 35-day release horizon and buyer's verdict across all six frontier labs.

📅 35-DAY FRONTIER DROP HORIZON (NOV 4 – DEC 9, 2026) · Ranked by Imminence ■ Imminent (1–10d) ■ Gate Unlock (7–17d) ■ Mid-Month Wave

LAB & TARGET RELEASE

Today (Nov 4) Nov 12 Nov 20 Nov 28 Dec 8

TREND-SLOPE WINDOW

xAI Grok 4.8 / Grok 5 Preview

Nov 5 – Nov 12, 2026

Google DeepMind Gemini 4 Carbon (Broad Ultimate GA)

Nov 11 – Nov 21, 2026

OpenAI GPT-6 Rosalind / GPT-6.2 Shipmas

Nov 13 – Nov 20, 2026

DeepSeek DeepSeek R3 / V4.5 (MIT Open Weights)

Nov 14 – Nov 24, 2026

Meta GenAI Muse Glimmer / Llama 5 Preview

Nov 19 – Nov 26, 2026

Anthropic Claude 5.6 / Mythos 5.5 Wave

Nov 28 – Dec 8, 2026

Most Imminent Drop

Grok 4.8 / 5.0

Nov 5 – Nov 12 (44 of 45d expanding cycle elapsed · 98%)

Next In Antigravity Ultimate

Gemini 4 Carbon

Nov 11 – Nov 21 (14–21d after Oct 28 Fairwind rollout)

Safest Production Adoption

Claude 5.5 & Argon

#1 Coding (84.2% SWE) & #1 Spatial (97.5%) · Clean runway

Open-Weight Watch

DeepSeek R3

Nov 14 – Nov 24 (55d post-patch silence signals major jump)

xAI · Colossus II Memphis Supercluster

Grok 4.7

Grok 4.3 (Jun 7) → Grok 4.5 (Jul 8) → Grok 4.6 (Aug 12) → Grok 4.7 (Sep 21)

HOLD · 98% OF CYCLE (DROP IMMINENT)

44d since Grok 4.7 (Sep 21, 2026)

Stretching: +4.0d / drop

Interval Trend → Next: 45d

2026 Drops: 4.3 (28d)4.5 (31d)4.6 (35d)4.7 (40d) 98%

Next Expected Release: Grok 4.8 / Grok 5 Preview

Flat Mean vs Slope Cycle: 34d flat avg vs 45d trend

Active Forecast Window: Nov 5 – Nov 12, 2026 (1–8d away)

Signal Confidence: 91% Confidence (Linear RL Scaling Pattern)

xAI's release intervals are expanding linearly (+3d, +4d, +5d) as each Colossus II post-training run scales compute. A naive 34-day average falsely says Grok is overdue, while the linear trend (45d from Sep 21) lands Nov 5–12. Do not lock in long-term Grok 4.7 fine-tunes this week.

Evidence & Pre-Release Signals (2)

Cadence Physics: 28d → 31d → 35d → 40d sequence fits a linear +4d/drop expansion (R² = 0.99), projecting Day 45 on Nov 5.
API Signal: xAI router staging endpoints added new reasoning-effort quantization parameters in late October.

Arena Elo1496

SWE-bench76.8%

GPQA Sci92.4%

API $/1M$2.80

Google DeepMind · Antigravity Ultimate & Vertex AI

Gemini 4 Argon (Live) & Carbon

3.8 Flash (Sep 2) → 3.8 Live (Sep 15) → 4 Argon Pre (Sep 30) → 4 Argon GA (Oct 13) → 4 Carbon Fairwind (Oct 28)

ADOPT ARGON NOW · CARBON IN 7–17d

7d since Carbon Fairwind (22d since Argon GA)

Accelerating: 14d Pulse

Interval Trend → Next: 16d

2026 Drops: 3.8 (54d)Live (13d)Argon Pre (15d)Argon GA (13d)Carbon (15d) 47%

Next Expected Release: Gemini 4 Carbon (Broad Ultimate GA)

Flat Mean vs Slope Cycle: 38d flat avg vs 18d trend

Active Forecast Window: Nov 11 – Nov 21, 2026 (7–17d away)

Signal Confidence: 94% Confidence (Confirmed Fairwind Gate)

Since September 2, DeepMind has shifted from 54-day gaps to a relentless 13-to-15-day heartbeat. Argon took 13 days from Sep 30 preview to Oct 13 Ultimate GA; Carbon entered its Fairwind cyber rollout Oct 28 and is on track to hit Ultimate between Nov 11 and Nov 21.

Evidence & Pre-Release Signals (2)

Preview-to-GA Precedent: Gemini 4 Argon went from Sep 30 preview to Oct 13 Antigravity Ultimate GA in 13 days.
Fairwind Safety Gate: Google's 3.8 Flash Cyber (Sep 2) and Anthropic's Mythos 5.1 both unlocked to broad GA in 21 days.

Arena Elo1518

SWE-bench82.6%

GPQA Sci94.8%

API $/1M$2 / $10

OpenAI · Modular Point-Release Wave

GPT-6 Astra, 6.1 Sol & 6.1 Terra

6 Astra (Sep 3) → 6 Sol/Luna (Sep 22) → 6.1 Sol (Sep 29) → ChatGPT GA (Oct 7) → 6.1 Terra (Oct 26)

POINT WAVE · NEXT IN 9–16d

9d since 6.1 Terra (36d since 6.1 Sol)

Accelerating: 18d Pulse

Interval Trend → Next: 18d

2026 Drops: Astra (76d)Sol (19d)6.1 Sol (7d)GA (8d)6.1 Terra (19d) 52%

Next Expected Release: GPT-6 Rosalind / GPT-6.2 Shipmas

Flat Mean vs Slope Cycle: 26d flat avg vs 19d trend

Active Forecast Window: Nov 13 – Nov 20, 2026 (9–16d away)

Signal Confidence: 86% Confidence (18d Modular Cadence)

OpenAI replaced monolithic quarterly releases with specialized point drops every ~18 days (Astra for science, Sol for fast coding, Terra for tool use). Adopt 6.1 Sol/Terra via API today, but expect GPT-6 Rosalind / 6.2 in the Nov 13–20 window.

Evidence & Pre-Release Signals (2)

Post-September Cadence: 5 distinct releases in 53 days (19d → 7d → 8d → 19d intervals).
Seasonal Catalyst: OpenAI's November/December 'Shipmas' release sequence historically begins mid-November.

Arena Elo1521

SWE-bench83.4%

GPQA Sci96.0%

API $/1M$7.50

DeepSeek · MIT Open-Weight Burst + Structural Wave

DeepSeek V4.1 Flash & V4 Pro

R2.5 (May 24) → V4 Flash (Jul 31) → V4 Pro (Aug 13) → V4.1 Flash (Sep 10)

HOLD GPU RESERVATIONS · R3 IN 10–20d

55d since V4.1 Flash (Sep 10, 2026)

Structural Pause: 55 of 65d

Interval Trend → Next: 65d

2026 Drops: V4 (68d)V4 Pro (13d)V4.1 (28d)Silence (55d+) 85%

Next Expected Release: DeepSeek R3 / V4.5 (MIT Open Weights)

Flat Mean vs Slope Cycle: 36d flat avg vs 65d trend

Active Forecast Window: Nov 14 – Nov 24, 2026 (10–20d away)

Signal Confidence: 88% Confidence (65d Structural Wave)

DeepSeek ships in 2-step point bursts (13d → 28d) followed by a ~65-day quiet period before its next architecture leap (mirroring the 68d pause before V4). At 55 days of silence, use V4.1 Flash ($0.22/1M) via API today, but hold permanent H200 GPU reservations for R3.

Evidence & Pre-Release Signals (2)

Structural Silence Indicator: Widening gap (13d → 28d → 55d) matches the pre-V4 68-day architecture compilation window.
vLLM / SGLang PR Activity: New MLA-v3 kernel optimizations merged upstream in late October.

Arena Elo1504

SWE-bench79.5%

GPQA Sci91.8%

API $/1M$0.22

Meta GenAI · Compressing Muse & Llama Open Cadence

Muse Spark Open & Llama 4.2

Muse 1.0 (Apr 8) → Muse 1.1 (Jul 9) → Muse 1.3 (Sep 2) → Muse Spark Open (Oct 15)

MID-CYCLE · 57% OF TREND

20d since Muse Spark Open (Oct 15, 2026)

Accelerating: -24.5d / drop

Interval Trend → Next: 35d

2026 Drops: 1.1 (92d)1.3 (55d)Open (43d) 57%

Next Expected Release: Muse Glimmer / Llama 5 Preview

Flat Mean vs Slope Cycle: 63d flat avg vs 35d trend

Active Forecast Window: Nov 19 – Nov 26, 2026 (15–22d away)

Signal Confidence: 82% Confidence (Damped Compression)

Meta cut its release interval more than in half across 2026 (92d → 55d → 43d). While a flat 63-day average points to mid-December, damped slope extrapolation places Muse Glimmer / Llama 5 Preview right before Thanksgiving (Nov 19–26).

Evidence & Pre-Release Signals (2)

Interval Halving: -24.5d/drop slope is the steepest compression among open-weight frontier labs.
Open-Weight Ecosystem: Oct 15 Muse Spark Open weights now supported across Together, Fireworks, and RunPod.

Arena Elo1488

SWE-bench74.8%

GPQA Sci89.4%

API $/1M$0.35

Anthropic · Bimodal Safety-Gated Burst Cadence

Claude Opus 5.5, Sonnet 5.5 & Haiku 5.5

Fable 5 (Jun 9) → Sonnet 5 (Jun 30) → Fable 5.1 (Sep 1) → Opus 5.5 (Sep 22) → Haiku 5.5 (Oct 7)

ADOPT CLAUDE 5.5 SUITE NOW

28d since Haiku 5.5 (43d since Opus 5.5)

Wave Pause: 94d → 63d → 52d

Interval Trend → Next: 52d

2026 Drops: Fable 5 (94d)Sonnet 5 (21d)Fable 5.1 (63d)Opus 5.5 (21d)Haiku (15d) 54%

Next Expected Release: Claude 5.6 / Mythos 5.5 Wave

Flat Mean vs Slope Cycle: 78d flat avg vs 52d trend

Active Forecast Window: Nov 28 – Dec 8, 2026 (24–34d away)

Signal Confidence: 92% Confidence (Bimodal Wave Model)

Anthropic ships in tight 21-day bursts separated by a compressing inter-wave pause (94d → 63d → ~52d). With the entire 5.5 trio (Opus, Sonnet, Haiku) freshly completed in October and leading SWE-bench (84.2%), you have a clean ~30-day runway to adopt now.

Evidence & Pre-Release Signals (2)

Exact 21-Day Gated-to-GA Law: Fable/Mythos 5 (Jun 9 → Jun 30) and 5.1 (Sep 1 → Sep 22) both unlocked in 21 days.
Suite Complete: All three tiers (Opus 5.5, Sonnet 5.5, Haiku 5.5) are live—no mid-wave disruption expected until late Nov.

Arena Elo1524

SWE-bench84.2%

GPQA Sci94.1%

API $/1M$6.00

VERIFIED PRE-RELEASE TELEMETRY & RUMOR LOG

Why 4 Models Are Converging on November 5 – November 26, 2026

Oct 28 – Nov 4, 2026

Gemini 4 Carbon (GA Unlock) Google DeepMind · Gate Countdown

Carbon launched in gated Fairwind cyber preview on Oct 28. Both Gemini 3.8 Flash Cyber (Sep 2 → Sep 23) and Argon Preview (Sep 30 → Oct 13) cleared their gates in 13 to 21 days, pointing directly to Nov 11–21 for Antigravity Ultimate GA.

94% Conf

Nov 2, 2026

Grok 4.8 / Grok 5 Preview xAI · Cadence + Endpoint Signal

44 days elapsed since Grok 4.7 (Sep 21). xAI's linear step expansion (28d → 31d → 35d → 40d) hits 45 days on Nov 5, coinciding with new reasoning-effort quantization flags in xAI's router schema.

91% Conf

Nov 1, 2026

DeepSeek R3 / V4.5 (MIT Open) DeepSeek · Kernel PR + Silence Window

55 days of silence since V4.1 Flash (Sep 10)—surpassing all intra-family patch gaps (13d, 28d) and approaching the 68-day structural compilation window that preceded V4. MLA-v3 tensor-parallel patches merged in SGLang/vLLM.

88% Conf

Oct 29, 2026

GPT-6 Rosalind / GPT-6.2 OpenAI · 18-Day Modular Pulse

Following GPT-6.1 Terra (Oct 26), OpenAI's trailing 18-day point-release cadence projects the next specialized scientific/coding checkpoint between Nov 13 and Nov 20 ahead of December Shipmas.

86% Conf

PRACTICAL DECISION TOOL · WORKLOAD ROUTER & API COST CALCULATOR

Which Model Should Run Your Workload Today & How Much Can You Save?

Select your primary task and monthly token volume to compare single-model flagship pricing against an 80/20 smart-routed stack.

Monthly Token Volume: 100M tokens / month Blended 3:1 Input/Output Ratio

LIVE MULTI-BENCHMARK LEADERBOARD

Click any capability pillar to re-rank all 9 frontier & fast-tier models

HEAD-TO-HEAD CAPABILITY DUEL STUDIO

Pit any two frontier models against each other across 5 axes

Contender A (Cyan Polygon)

5-Axis Capability Polygon

Contender B (Emerald Polygon)

AGENTIC & DEVELOPER SURFACES · MCP SERVER, LLMS.TXT & JSON API

Connect Coding Agents (Cursor, Claude Code, Windsurf) to Live Release Verdicts

Query live trend-slope release windows, 80/20 token routing math, and SWE-bench / GPQA leaderboards directly inside your IDE or automated CI router.

1. MODEL CONTEXT PROTOCOL (MCP SERVER)

Add to `.cursor/mcp.json` or `claude_desktop_config.json`

Exposes mcp_get_release_verdict(lab_or_model) and mcp_get_optimal_workload_stack(monthly_tokens_millions, primary_workload).

{
  "mcpServers": {
    "modelrumors-ai": {
      "command": "python3",
      "args": ["mcp_server.py"]
    }
  }
}

2. MACHINE-READABLE AGENT INDEX (/LLMS.TXT)

Zero-Latency Markdown Context for AI Search & RAG

Updated every 6 hours with current ADOPT NOW / HOLD verdicts, OLS interval slopes, and recommended inference endpoints.

📄 View /llms.txt Index ⚡ View /api/v1/models_state.json

Developer & Router Tier

Pro JSON Routing Feed · $79/mo

Unmetered Bearer API access to /api/v1/models_state.json (6-hour SLA, webhook drop alerts, and live OpenRouter/HuggingFace checkpoint diffs).

Get Bearer API Key ($79/mo)

Automated Bot / Scraper Access

HTTP 402 Pay-Per-Crawl · $0.008/req

Commercial AI crawlers and RAG indexers can pull /api/v1/models_state.json on demand by passing an X-TollBit-Token header at the Cloudflare edge.

Inspect JSON Schema

Inference Cloud Partners

Verified Host Row · $1,500/mo

List your verified throughput (tok/s), quantization tier, and 1-click deploy endpoint inside our llms.txt, MCP server, and Buyer's Guide cards.

Reserve Verified Host Slot

EMBEDDABLE GITHUB README & DOCS VERDICT BADGE

Copy this 1-line Markdown snippet into your GitHub repository README or engineering docs to display live release verdicts:

RELEASE COUNTDOWNS · 6 FRONTIER LABS

Dedicated Lab Release-Clock Reports

xAI · HOLD · 98% OF CYCLE (DROP IMMINENT)

When Will Grok 4.8 / Grok 5 Preview Release?

Projected Window: Nov 5 – Nov 12, 2026 (1–8d away)

Google DeepMind · ADOPT ARGON NOW · CARBON IN 7–17d

When Will Gemini 4 Carbon (Broad Ultimate GA) Release?

Projected Window: Nov 11 – Nov 21, 2026 (7–17d away)

OpenAI · POINT WAVE · NEXT IN 9–16d

When Will GPT-6 Rosalind / GPT-6.2 Shipmas Release?

Projected Window: Nov 13 – Nov 20, 2026 (9–16d away)

DeepSeek · HOLD GPU RESERVATIONS · R3 IN 10–20d

When Will DeepSeek R3 / V4.5 (MIT Open Weights) Release?

Projected Window: Nov 14 – Nov 24, 2026 (10–20d away)

Meta GenAI · MID-CYCLE · 57% OF TREND

When Will Muse Glimmer / Llama 5 Preview Release?

Projected Window: Nov 19 – Nov 26, 2026 (15–22d away)

Anthropic · ADOPT CLAUDE 5.5 SUITE NOW

When Will Claude 5.6 / Mythos 5.5 Wave Release?

Projected Window: Nov 28 – Dec 8, 2026 (24–34d away)

HEAD-TO-HEAD BENCHMARK MATRIX · 36 PAIRWISE COMPARISONS

All 36 Frontier & Fast-Tier Model Matchups

Claude Opus 5.5 vs. Gemini 4 Argon (High)

SWE: 84.2% vs 82.6% · Cost: $6.00 vs $2/$10

Claude Opus 5.5 vs. GPT-6 Astra

SWE: 84.2% vs 83.4% · Cost: $6.00 vs $7.50

Claude Opus 5.5 vs. Claude Sonnet 5.5

SWE: 84.2% vs 82.9% · Cost: $6.00 vs $3.00

Claude Opus 5.5 vs. GPT-6.1 Sol

SWE: 84.2% vs 81.2% · Cost: $6.00 vs $3.50

Claude Opus 5.5 vs. DeepSeek V4.1 Flash

SWE: 84.2% vs 79.5% · Cost: $6.00 vs $0.22

Claude Opus 5.5 vs. Gemini 3.8 Flash

SWE: 84.2% vs 77.4% · Cost: $6.00 vs $0.30

Claude Opus 5.5 vs. Grok 4.7

SWE: 84.2% vs 76.8% · Cost: $6.00 vs $2.80

Claude Opus 5.5 vs. Muse Spark Open / Llama 4.2

SWE: 84.2% vs 74.8% · Cost: $6.00 vs $0.35

Gemini 4 Argon (High) vs. GPT-6 Astra

SWE: 82.6% vs 83.4% · Cost: $2/$10 vs $7.50

Gemini 4 Argon (High) vs. Claude Sonnet 5.5

SWE: 82.6% vs 82.9% · Cost: $2/$10 vs $3.00

Gemini 4 Argon (High) vs. GPT-6.1 Sol

SWE: 82.6% vs 81.2% · Cost: $2/$10 vs $3.50

Gemini 4 Argon (High) vs. DeepSeek V4.1 Flash

SWE: 82.6% vs 79.5% · Cost: $2/$10 vs $0.22

Gemini 4 Argon (High) vs. Gemini 3.8 Flash

SWE: 82.6% vs 77.4% · Cost: $2/$10 vs $0.30

Gemini 4 Argon (High) vs. Grok 4.7

SWE: 82.6% vs 76.8% · Cost: $2/$10 vs $2.80

Gemini 4 Argon (High) vs. Muse Spark Open / Llama 4.2

SWE: 82.6% vs 74.8% · Cost: $2/$10 vs $0.35

GPT-6 Astra vs. Claude Sonnet 5.5

SWE: 83.4% vs 82.9% · Cost: $7.50 vs $3.00

GPT-6 Astra vs. GPT-6.1 Sol

SWE: 83.4% vs 81.2% · Cost: $7.50 vs $3.50

GPT-6 Astra vs. DeepSeek V4.1 Flash

SWE: 83.4% vs 79.5% · Cost: $7.50 vs $0.22

GPT-6 Astra vs. Gemini 3.8 Flash

SWE: 83.4% vs 77.4% · Cost: $7.50 vs $0.30

GPT-6 Astra vs. Grok 4.7

SWE: 83.4% vs 76.8% · Cost: $7.50 vs $2.80

GPT-6 Astra vs. Muse Spark Open / Llama 4.2

SWE: 83.4% vs 74.8% · Cost: $7.50 vs $0.35

Claude Sonnet 5.5 vs. GPT-6.1 Sol

SWE: 82.9% vs 81.2% · Cost: $3.00 vs $3.50

Claude Sonnet 5.5 vs. DeepSeek V4.1 Flash

SWE: 82.9% vs 79.5% · Cost: $3.00 vs $0.22

Claude Sonnet 5.5 vs. Gemini 3.8 Flash

SWE: 82.9% vs 77.4% · Cost: $3.00 vs $0.30

Claude Sonnet 5.5 vs. Grok 4.7

SWE: 82.9% vs 76.8% · Cost: $3.00 vs $2.80

Claude Sonnet 5.5 vs. Muse Spark Open / Llama 4.2

SWE: 82.9% vs 74.8% · Cost: $3.00 vs $0.35

GPT-6.1 Sol vs. DeepSeek V4.1 Flash

SWE: 81.2% vs 79.5% · Cost: $3.50 vs $0.22

GPT-6.1 Sol vs. Gemini 3.8 Flash

SWE: 81.2% vs 77.4% · Cost: $3.50 vs $0.30

GPT-6.1 Sol vs. Grok 4.7

SWE: 81.2% vs 76.8% · Cost: $3.50 vs $2.80

GPT-6.1 Sol vs. Muse Spark Open / Llama 4.2

SWE: 81.2% vs 74.8% · Cost: $3.50 vs $0.35

DeepSeek V4.1 Flash vs. Gemini 3.8 Flash

SWE: 79.5% vs 77.4% · Cost: $0.22 vs $0.30

DeepSeek V4.1 Flash vs. Grok 4.7

SWE: 79.5% vs 76.8% · Cost: $0.22 vs $2.80

DeepSeek V4.1 Flash vs. Muse Spark Open / Llama 4.2

SWE: 79.5% vs 74.8% · Cost: $0.22 vs $0.35

Gemini 3.8 Flash vs. Grok 4.7

SWE: 77.4% vs 76.8% · Cost: $0.30 vs $2.80

Gemini 3.8 Flash vs. Muse Spark Open / Llama 4.2

SWE: 77.4% vs 74.8% · Cost: $0.30 vs $0.35

Grok 4.7 vs. Muse Spark Open / Llama 4.2

SWE: 76.8% vs 74.8% · Cost: $2.80 vs $0.35

Should You Adopt Today or Wait for the Next Drop?

Grok 4.7

Gemini 4 Argon (Live) & Carbon

GPT-6 Astra, 6.1 Sol & 6.1 Terra

DeepSeek V4.1 Flash & V4 Pro

Muse Spark Open & Llama 4.2

Claude Opus 5.5, Sonnet 5.5 & Haiku 5.5

Why 4 Models Are Converging on November 5 – November 26, 2026

Which Model Should Run Your Workload Today & How Much Can You Save?

Click any capability pillar to re-rank all 9 frontier & fast-tier models

Pit any two frontier models against each other across 5 axes

Connect Coding Agents (Cursor, Claude Code, Windsurf) to Live Release Verdicts

Add to .cursor/mcp.json or claude_desktop_config.json

Zero-Latency Markdown Context for AI Search & RAG

Dedicated Lab Release-Clock Reports

All 36 Frontier & Fast-Tier Model Matchups

Add to `.cursor/mcp.json` or `claude_desktop_config.json`