PickAIModel.com - Compare Claude Haiku 4.5 and Grok 4.1 Fast
Claude Haiku 4.5 vs Grok 4.1 Fast: 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 Haiku 4.5 Quality
11.5
Grok 4.1 Fast Quality
29.6
Quality delta
-18.1Grok 4.1 Fast leads
Value delta
-19.5Grok 4.1 Fast leads
Buyer summary
Grok 4.1 Fast leads Quality by 18.1 points. Grok 4.1 Fast leads Value by 19.5 points.
Snapshot freshness
Snapshot April 29, 2026. Both pages link back to the same published roster and methodology, so the comparison stays on one deterministic evidence set.
Grok 4.1 Fast has been refreshed from current public source data.
Monthly price
X Premium+: Price unavailable
App access
Grok
Ease of use
75% | Easy to start
Verified vendor fact
Consumer plan pricing was not available in the current snapshot.
Verified vendor fact
Hosted app availability is grounded in the current official vendor surface.
Deterministic scores
Quality and Value comparison
Claude Haiku 4.5
Q 11.5
V 49.1
Quality rank 10 and value rank 9 in the current published roster.
Grok 4.1 Fast
Q 29.6
V 68.6
Quality rank 9 and value rank 4 in the current published roster.
Buyer access
Pricing, app access, and ease of use
Claude Haiku 4.5
Verified vendor fact90% ease of use
Claude Pro: $20/month
~1,961 conversations equivalent
Hosted app: Claude
Grok 4.1 Fast
Verified vendor fact75% ease of use
X Premium+: Price unavailable
Unavailable
Hosted app: Grok
Benchmark evidence
Claude Haiku 4.5
Verified Mar 26, 2026
Humanity's Last Exam
Normalized quality input
9.7%
Third-party HLE evaluation page | Third-party HLE evaluation page. This row reflects the Claude 4.5 Haiku non-reasoning result.
GPQA Diamond
Normalized quality input
67.2%
Third-party GPQA evaluation page | Corrects overstated GPQA score for Claude Haiku 4.5.
MRCR v2
128k retrieval
35.3%
Google DeepMind Gemini 3.1 Flash-Lite comparison table | Vendor-published cross-model comparison table. Treat this as current official evidence, not neutral third-party benchmarking.
Terminal-Bench 2.0
Agentic terminal task completion
35.5%
Terminal-Bench 2.0 official leaderboard | Official Terminal-Bench 2.0 leaderboard row for Goose + Claude Haiku 4.5; accuracy 35.5% +/- 2.9.
Benchmark evidence
Grok 4.1 Fast
Verified Apr 7, 2026
Humanity's Last Exam
Normalized quality input
17.6%
Third-party HLE evaluation page | Replaces the prior inflated Grok 4.1 Fast HLE row.
ARC-AGI-2
Novel pattern reasoning
16.0%
ARC Prize leaderboard | ARC-AGI-2 is shown as supplementary evidence only and is not currently included in the PickAI Quality Score.
MathArena
Expected Performance
49.9%
MathArena models leaderboard | MathArena is shown as supplementary evidence only and is not currently included in the PickAI Quality Score.
Editorial excerpt
Claude Haiku 4.5
AI-assisted, editorially reviewed
Claude Haiku 4.5 has been refreshed from current public source data.
Claude Haiku 4.5 has been rebuilt from freshly acquired public source data. Buyer-facing editorial prose updates after the protected AI overlay refresh completes.
Editorial excerpt
Grok 4.1 Fast
AI-assisted, editorially reviewed
Grok 4.1 Fast has been refreshed from current public source data.
Grok 4.1 Fast has been rebuilt from freshly acquired public source data. Buyer-facing editorial prose updates after the protected AI overlay refresh completes.
Continue Research
Move from the head-to-head page back into the full roster.