PickAIModel.com - Compare Claude Opus 4.8 and Grok 4.3
Claude Opus 4.8 vs Grok 4.3: pricing, Quality, Value, and benchmarks
Side-by-side buyer comparison built from the current published top 10 snapshot. Quality and Value stay deterministic, while editorial verdict excerpts remain clearly AI-labeled.
Verified evidenceVerified evidence
Claude Opus 4.8 Quality
100.0
Grok 4.3 Quality
35.4
Quality delta
+64.6Claude Opus 4.8 leads
Value delta
-11.0Grok 4.3 leads
Buyer summary
Claude Opus 4.8 leads Quality by 64.6 points. Grok 4.3 leads Value by 11.0 points.
Shared roster
Both pages link back to the same published roster and methodology, so the comparison stays on one deterministic evidence set.
Claude Opus 4.8 is Anthropic's newest Opus model, strongest for coding, agentic tasks, and complex professional work where the vendor-reported benchmark evidence applies.
Monthly price
Claude Pro: $20/month
App access
Claude
Conversation benchmark
~392 chats
Deterministic
Claude Pro public monthly plan reference.
Deterministic
Claude Opus 4.8 is available in Claude and through the Claude API.
Grok 4.3: High-intelligence reasoning with 1M context, elite tool use while trying to offer competitive value through its pricing strategy.
Monthly price
X Premium+: $40/month
App access
Grok
Conversation benchmark
~6,667 chats
Verified vendor fact
Consumer plan pricing is grounded in the current official vendor plan page.
Verified vendor fact
Hosted app availability is grounded in the current official vendor surface.
Deterministic scores
Quality and Value comparison
Claude Opus 4.8
Q 100.0
V 42.9
Quality rank 1 and value rank 6 in the current published roster.
Grok 4.3
Q 35.4
V 53.9
Quality rank 8 and value rank 3 in the current published roster.
Buyer access
Pricing, app access, and Conversation Value
Claude Opus 4.8
Deterministic3K tokens/chat
Claude Pro: $20/month
~392 chats
Hosted app: Claude
Grok 4.3
Verified vendor fact3K tokens/chat
X Premium+: $40/month
~6,667 chats
Hosted app: Grok
Benchmark evidence
Claude Opus 4.8
Verified evidence
Humanity's Last Exam
Normalized quality input
49.8%
Anthropic Claude Opus 4.8 release page | Vendor-reported Anthropic Opus 4.8 HLE no-tools score. Do not replace with tools-enabled or adaptive-effort HLE variants.
SWE-Bench Pro
Software engineering task resolution
69.2%
Anthropic Claude Opus 4.8 release page | Vendor-reported Anthropic Opus 4.8 SWE-Bench Pro score. Do not substitute SWE-Bench Verified.
Benchmark evidence
Grok 4.3
Verified evidence
Humanity's Last Exam
Normalized quality input
35.0%
Artificial Analysis Grok 4.3 high analysis page | Third-party benchmark comparison page with sourced tables and transparent methodology. Treat this as accepted tier-3 benchmark evidence and cite exact Grok 4.3 high rows only.
SciCode
Normalized quality input
47.3%
Artificial Analysis Grok 4.3 high analysis page | Third-party benchmark comparison page with sourced tables and transparent methodology. Treat this as accepted tier-3 benchmark evidence and cite exact Grok 4.3 high rows only.
GPQA Diamond
Normalized quality input
90.1%
Artificial Analysis Grok 4.3 high analysis page | Third-party benchmark comparison page with sourced tables and transparent methodology. Treat this as accepted tier-3 benchmark evidence and cite exact Grok 4.3 high rows only.
AA-LCR
1M long-context
84.0%
Artificial Analysis Grok 4.3 high analysis page | Third-party benchmark comparison page with sourced tables and transparent methodology. Treat this as accepted tier-3 benchmark evidence and cite exact Grok 4.3 high rows only.
Editorial excerpt
Claude Opus 4.8
AI-assisted, editorially reviewed
Claude Opus 4.8 is Anthropic's newest Opus model, strongest for coding, agentic tasks, and complex professional work where the vendor-reported benchmark evidence applies.
Claude Opus 4.8 is under active editorial review. Current public ranking data is limited to accepted source/fact evidence for benchmarks, pricing, and context rather than AI-generated score changes.
Editorial excerpt
Grok 4.3
AI-assisted, editorially reviewed
Grok 4.3: High-intelligence reasoning with 1M context, elite tool use while trying to offer competitive value through its pricing strategy.
Grok 4.3 is xAI’s cost-optimized reasoning model released around early 2026. It delivers solid performance on complex logic, math, agentic workflows, and long-context tasks (1M tokens), with strong tool use and factual focus.
Strengths: Significantly cheaper and more efficient than Grok 4, improved readability/formatting, and practical for high-volume or office-style automation. It prioritizes utility over raw benchmark dominance.
Weaknesses: Trails frontier leaders like top Claude or GPT variants in peak precision coding, deep creativity, or the hardest reasoning benchmarks. Occasional inconsistency remains.
Verdict: A pragmatic, affordable workhorse rather than the undisputed smartest model. Excellent value for everyday power users who need speed and scale over absolute cutting-edge performance. Solid evolution.
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