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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

  1. Home
  2. Comparisons
  3. Claude Fable 5 vs Gemini 2.5 Pro

Pairwise benchmark snapshot · Aug 16, 2026

Claude Fable 5 vs Gemini 2.5 Pro benchmark

This page compares Claude Fable 5 (Anthropic) and Gemini 2.5 Pro (Google) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, Claude Fable 5 is ahead by 266 points (1,616 vs 1,350; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Claude Fable 5 resolves 80% versus 63.8% (seed-bootstrap (Aug 16, 2026)). Gemini 2.5 Pro streams faster (95 tok/s) while Gemini 2.5 Pro is the cheaper output token ($10/1M). Gemini 2.5 Pro has the larger context window (1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

Quick answer

Claude Fable 5 vs Gemini 2.5 Pro is a dated snapshot, not a lab score. Claude Fable 5 leads preference Elo (1,616 vs 1,350). Claude Fable 5 leads SWE-bench coding. Gemini 2.5 Pro is the cheaper output token. Elo is crowd preference, not an exam. Pick the column that matches the job.
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Anthropic

Claude Fable 5

Anthropic top-tier long-horizon model. Official API $10/$50 per 1M tokens (Claude Platform pricing, Aug 2026).

Elo 1,616$50/1M out

Google

Gemini 2.5 Pro

Previous Google long-context flagship.

Elo 1,350$10/1M out

Swap or Add Any Model to this Matchup

Instant pairwise benchmark recalculation across 400+ LLMs

Model A
Model B
Quick vs:vs Claude Opus 4.5vs Claude Opus 4.6vs Claude Sonnet 4.5vs Claude 3.7 Sonnet

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Claude Fable 5 (5)vsGemini 2.5 Pro (5)
Claude Fable 5: 5W (50%)Overall: Even matchupGemini 2.5 Pro: 5W (50%)
← Claude Fable 5Gemini 2.5 Pro →
Claude Fable 5 (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo
1,616vs1,350
Coding Elo
1,622vs—
SWE-bench
80%vs63.8%
LiveBench
75.2%vs57.1%
GPQA Diamond
87.6%vs76.4%
Claude Fable 5: 5WGemini 2.5 Pro: 0W
Gemini 2.5 Pro (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
58 tok/svs95 tok/s
Time to first token
340 msvs210 ms
Claude Fable 5: 0WGemini 2.5 Pro: 2W
Gemini 2.5 Pro (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$50/1Mvs$10/1M
Input price
$10/1Mvs$1.25/1M
Context window
1Mvs1M
Claude Fable 5: 0WGemini 2.5 Pro: 3W
Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect
Percentile 0–100
Dimensional AdvantageEven 3–3
Preference Elo

Claude Fable 5

266 pts advantage

Throughput Speed

Gemini 2.5 Pro

37 tok/s faster

Price Efficiency

Gemini 2.5 Pro

$40.00/1M cheaper

Full Benchmark Score Matrix

—
Elo
High is better
+20%1,616
EloHigh is better
1,350
Code Elo
High is better
1,622
Code EloHigh is better
—
LiveBench
High is better
+32%75.2%
LiveBenchHigh is better
57.1%
SWE-bench
High is better
+25%80%
SWE-benchHigh is better
63.8%
GPQA
High is better
+15%87.6%
GPQAHigh is better
76.4%
TTFT
Low is better
340 ms
TTFTLow is better
210 ms+62%
Speed
High is better
58 tok/s
SpeedHigh is better
95 tok/s+64%
In $
Low is better
$10/1M
In $Low is better
$1.25/1M+700%
Out $
Low is better
$50/1M
Out $Low is better
$10/1M+400%
Context
High is better
1M
ContextHigh is better
1M+5%
Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 82% with Gemini 2.5 Pro
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Claude Fable 5$1,100.00 / mo
In: $350.00Out: $750.00
Gemini 2.5 Pro$193.75 / mo
In: $43.75Out: $150.00
Estimated Cost Delta

Gemini 2.5 Pro is estimated to save $906.25/month ($10,875/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Claude Fable 5:Pick Claude Fable 5 when repo-level coding accuracy is the constraint.
  • 2
    Gemini 2.5 Pro:Pick Gemini 2.5 Pro when you are optimizing output cost.
  • 3
    Gemini 2.5 Pro:Pick Gemini 2.5 Pro when time-to-first-token matters more than peak Elo.

Recommended Workload Routing

Repo / coding agentsClaude Fable 5

Higher SWE-bench (80%).

High-volume chatGemini 2.5 Pro

Lower output list price ($10/1M).

Voice / low-latency UIGemini 2.5 Pro

Lower TTFT (210 ms).

Long-document RAGGemini 2.5 Pro

Larger window (1M).

Screenshots / visionClaude Fable 5

Both accept images. Defaulting to the higher-Elo side (Claude Fable 5).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsClaude Fable 5Higher SWE-bench (80%).
High-volume chatGemini 2.5 ProLower output list price ($10/1M).
Voice / low-latency UIGemini 2.5 ProLower TTFT (210 ms).
Long-document RAGGemini 2.5 ProLarger window (1M).
Screenshots / visionClaude Fable 5Both accept images. Defaulting to the higher-Elo side (Claude Fable 5).

Related Editorial Dispatches & Benchmark Notes

View all news
launchJun 15, 2026

Claude Fable 5: the $10/$50 long-horizon Anthropic SKU

Fable 5 is not Sonnet with extra adjectives. It is the expensive long-horizon row. Read SWE-bench and output price together.

launchMar 25, 2025

Gemini 2.5 Pro remains the previous Google long-context flagship

2025-03 row. 3.x Pro replaced it. Kept for old “2.5 pro vs gpt-4o” inbound.

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CompareLLM Matrix

Verified head-to-head card

LIVE
VS
Anthropic

Claude Fable 5

Elo 1,616
LiveBench75.2%
SWE-bench80%
Speed58 tok/s
Output cost$50/1M
Google

Gemini 2.5 Pro

Elo 1,350
LiveBench57.1%
SWE-bench63.8%
Speed95 tok/s
Output cost$10/1M

Frequently Asked Questions

Which is better overall, Claude Fable 5 or Gemini 2.5 Pro?
Claude Fable 5 has the higher preference Elo in our latest snapshot (1,616). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude Fable 5 or Gemini 2.5 Pro?
Claude Fable 5 leads SWE-bench at 80% vs 63.8%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Gemini 2.5 Pro output tokens are $10/1M versus $50/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Fable 5 or Gemini 2.5 Pro?
Gemini 2.5 Pro has the lower time-to-first-token (210 ms vs 340 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Gemini 2.5 Pro accepts 1M tokens versus 1M.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Claude Fable 5 and Gemini 2.5 Pro Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Jun 15, 2026

    Claude Fable 5: the $10/$50 long-horizon Anthropic SKU

  • launch · Mar 25, 2025

    Gemini 2.5 Pro remains the previous Google long-context flagship

Similar Head-to-Head Comparisons

All Claude Fable 5 matchups →|All Gemini 2.5 Pro matchups →
Gemini 2.5 Pro vs Gemini 1.5 Pro (previous gemini-pro)Gemini 2.5 Pro vs Gemini 3 Pro (next gemini-pro)Claude Opus 5 vs Claude Fable 5Claude Opus 4.8 vs Claude Fable 5Claude Opus 4.6 vs Claude Fable 5Gemini 3.6 Pro vs Claude Fable 5