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Every score has a dated snapshot.

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  3. Claude 3.5 Haiku vs Gemini 2.0 Flash Thinking

Pairwise benchmark snapshot · Aug 1, 2026

Claude 3.5 Haiku vs Gemini 2.0 Flash Thinking benchmark

In this head-to-head showdown, Gemini 2.0 Flash Thinking delivers higher overall intelligence and human-preferred responses (Elo 1,490 vs 1,224), while Gemini 2.0 Flash Thinking leads in SWE-bench software engineering benchmarks (66.8%), while Gemini 2.0 Flash Thinking is more budget-friendly at $0.4/1M per 1M output tokens, while Claude 3.5 Haiku provides faster response streaming (140 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Gemini 2.0 Flash Thinking holds the advantage over Claude 3.5 Haiku in overall benchmark performance and human evaluation rankings. Choose Gemini 2.0 Flash Thinking for demanding workloads, or review the breakdown below to compare coding and pricing metrics.
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Verified Head-to-Head Advantage Breakdown

9 direct benchmark disciplines evaluated across capability, speed, and cost

Claude 3.5 Haiku (2)Gemini 2.0 Flash Thinking (7)
Claude 3.5 Haiku
2 of 9 Wins
✓Time to first token✓Output speed
Gemini 2.0 Flash Thinking
7 of 9 Wins
✓Preference Elo✓LiveBench✓SWE-bench✓GPQA Diamond✓Input price✓Output price✓Context window
Anthropic
Leads 2 of 9 metrics
Claude 3.5 Haiku

Previous cheap Claude. Haiku 4.5 is the current $1/$5 SKU.

Elo 1,224$4/1M out
Google
Leads 7 of 9 metrics
Gemini 2.0 Flash Thinking

Google experimental reasoning model that visualizes thoughts in real-time.

Elo 1,490$0.4/1M out

Gemini 2.0 Flash Thinking Thinking Depth & Cost Scaler

Model B

Simulate accuracy gains vs added response time & token cost

Mode: Medium (8k tokens)

Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.

Thinking Delay
220 ms
Standard speed
Reasoning Depth
~2,400
Internal tokens
Cost / 1k Calls
$1.13
6.6× standard bill
Accuracy Boost
+4.8% accuracy
STEM & SWE-bench
Top Rival Showdowns for Claude 3.5 Haiku
All Matchups
Compare vs:vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference LeaderGemini 2.0 Flash Thinking Wins

Gemini 2.0 Flash Thinking

Δ 266 Arena Elo pts

Throughput LeaderClaude 3.5 Haiku Wins

Claude 3.5 Haiku

140 tok/s

Value per Dollar LeaderGemini 2.0 Flash Thinking Wins

Gemini 2.0 Flash Thinking

$0.4 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
Percentile 0–100
Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

Claude 3.5 Haiku (2)vsGemini 2.0 Flash Thinking (8)
Claude 3.5 Haiku: 2W (20%)Overall: Gemini 2.0 Flash ThinkingGemini 2.0 Flash Thinking: 8W (80%)
← Claude 3.5 HaikuGemini 2.0 Flash Thinking →
🏆Gemini 2.0 Flash Thinking(5/5)

Intelligence & Reasoning

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

Benchmark
Claude 3.5 HaikuvsGemini 2.0 Flash Thinking
Preference Elo
1,224vs1,490+266
Coding Elo
—vs1,515
SWE-bench
36.2%vs66.8%+30.6%
LiveBench
44.8%vs67%+22.2%
GPQA Diamond
54.1%vs81%+26.9%
Claude 3.5 Haiku: 0WGemini 2.0 Flash Thinking: 5W
🏆Claude 3.5 Haiku(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude 3.5 HaikuvsGemini 2.0 Flash Thinking
Output speed
140 tok/svs115 tok/s+25 tok/s
Time to first token
110 msvs220 ms+110 ms
Claude 3.5 Haiku: 2WGemini 2.0 Flash Thinking: 0W
🏆Gemini 2.0 Flash Thinking(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude 3.5 HaikuvsGemini 2.0 Flash Thinking
Output price
$4/1Mvs$0.4/1M+$3.6/1M
Input price
$0.8/1Mvs$0.1/1M+$0.7/1M
Context window
200kvs1M+849k
Claude 3.5 Haiku: 0WGemini 2.0 Flash Thinking: 3W

Side-by-Side Benchmark Matrix

Preference Elo+266
Claude 3.5 Haiku1,224
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking1,490
seed-bootstrap · Aug 1, 2026
Coding Elo
Claude 3.5 Haiku—
Gemini 2.0 Flash Thinking1,515
seed-bootstrap · Aug 1, 2026
LiveBench+22.2%
Claude 3.5 Haiku44.8%
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking67%
seed-bootstrap · Aug 1, 2026
SWE-bench+30.6%
Claude 3.5 Haiku36.2%
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking66.8%
seed-bootstrap · Aug 1, 2026
GPQA Diamond+26.9%
Claude 3.5 Haiku54.1%
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking81%
seed-bootstrap · Aug 1, 2026
Time to first token+110 ms
Claude 3.5 Haiku110 ms
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking220 ms
seed-bootstrap · Aug 1, 2026
Output speed+25 tok/s
Claude 3.5 Haiku140 tok/s
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking115 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$0.7/1M
Claude 3.5 Haiku$0.8/1M
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking$0.1/1M
seed-bootstrap · Aug 1, 2026
Output price+$3.6/1M
Claude 3.5 Haiku$4/1M
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking$0.4/1M
seed-bootstrap · Aug 1, 2026
Context window+849k
Claude 3.5 Haiku200k
seed-bootstrap · Aug 1, 2026
Gemini 2.0 Flash Thinking1M
seed-bootstrap · Aug 1, 2026
BenchmarkClaude 3.5 HaikuGemini 2.0 Flash ThinkingAdvantage Delta
Preference Elo
1,224
seed-bootstrap · Aug 1, 2026
1,490
seed-bootstrap · Aug 1, 2026
+266
Coding Elo—
1,515
seed-bootstrap · Aug 1, 2026
—
LiveBench
44.8%
seed-bootstrap · Aug 1, 2026
67%
seed-bootstrap · Aug 1, 2026
+22.2%
SWE-bench
36.2%
seed-bootstrap · Aug 1, 2026
66.8%
seed-bootstrap · Aug 1, 2026
+30.6%
GPQA Diamond
54.1%
seed-bootstrap · Aug 1, 2026
81%
seed-bootstrap · Aug 1, 2026
+26.9%
Time to first token
110 ms
seed-bootstrap · Aug 1, 2026
220 ms
seed-bootstrap · Aug 1, 2026
+110 ms
Output speed
140 tok/s
seed-bootstrap · Aug 1, 2026
115 tok/s
seed-bootstrap · Aug 1, 2026
+25 tok/s
Input price
$0.8/1M
seed-bootstrap · Aug 1, 2026
$0.1/1M
seed-bootstrap · Aug 1, 2026
+$0.7/1M
Output price
$4/1M
seed-bootstrap · Aug 1, 2026
$0.4/1M
seed-bootstrap · Aug 1, 2026
+$3.6/1M
Context window
200k
seed-bootstrap · Aug 1, 2026
1M
seed-bootstrap · Aug 1, 2026
+849k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save up to 89% with Gemini 2.0 Flash Thinking
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Claude 3.5 Haiku$88.00 / mo
In: $28Out: $60
Gemini 2.0 Flash Thinking$9.50 / mo
In: $3.5Out: $6
Estimated Cost Delta

Gemini 2.0 Flash Thinking is estimated to save $78.50/month ($942/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Gemini 2.0 Flash Thinking:Pick Gemini 2.0 Flash Thinking when repo-level coding accuracy is the constraint.
  • 2
    Claude 3.5 Haiku:Pick Claude 3.5 Haiku when time-to-first-token matters more than peak Elo.
  • 3
    Gemini 2.0 Flash Thinking:Pick Gemini 2.0 Flash Thinking for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsGemini 2.0 Flash Thinking

Higher SWE-bench (66.8%).

High-volume chatGemini 2.0 Flash Thinking

Lower output list price ($0.4/1M).

Voice / low-latency UIClaude 3.5 Haiku

Lower TTFT (110 ms).

Long-document RAGGemini 2.0 Flash Thinking

Larger window (1M).

Screenshots / visionGemini 2.0 Flash Thinking

Both accept images. Defaulting to the higher-Elo side (Gemini 2.0 Flash Thinking).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsGemini 2.0 Flash ThinkingHigher SWE-bench (66.8%).
High-volume chatGemini 2.0 Flash ThinkingLower output list price ($0.4/1M).
Voice / low-latency UIClaude 3.5 HaikuLower TTFT (110 ms).
Long-document RAGGemini 2.0 Flash ThinkingLarger window (1M).
Screenshots / visionGemini 2.0 Flash ThinkingBoth accept images. Defaulting to the higher-Elo side (Gemini 2.0 Flash Thinking).
Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Claude 3.5 Haiku

Elo 1,224
SWE-bench36.2%
Speed (tok/s)140 tok/s
Input / 1M Tokens$0.8/1M
Output / 1M Tokens$4/1M
Google

Gemini 2.0 Flash Thinking

Elo 1,490
SWE-bench66.8%
Speed (tok/s)115 tok/s
Input / 1M Tokens$0.1/1M
Output / 1M Tokens$0.4/1M

Frequently Asked Questions

Which is better overall, Claude 3.5 Haiku or Gemini 2.0 Flash Thinking?
Gemini 2.0 Flash Thinking has the higher preference Elo in our latest snapshot (1,490). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Claude 3.5 Haiku or Gemini 2.0 Flash Thinking?
Gemini 2.0 Flash Thinking leads SWE-bench at 66.8% vs 36.2%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Gemini 2.0 Flash Thinking output tokens are $0.4/1M versus $4/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude 3.5 Haiku or Gemini 2.0 Flash Thinking?
Claude 3.5 Haiku has the lower time-to-first-token (110 ms vs 220 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Gemini 2.0 Flash Thinking accepts 1M tokens versus 200k.
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 3.5 Haiku and Gemini 2.0 Flash Thinking Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude 3.5 Haiku matchups →|All Gemini 2.0 Flash Thinking matchups →
Claude 3.5 Haiku vs Claude Haiku 4.5 (next haiku)Gemini 2.0 Flash Thinking vs Gemini 2.5 Flash (next gemini-flash)Claude Opus 4.5 vs Gemini 2.0 Flash ThinkingClaude Opus 4.6 vs Gemini 2.0 Flash ThinkingClaude Sonnet 4.5 vs Gemini 2.0 Flash ThinkingGemini 3 Pro vs Gemini 2.0 Flash Thinking