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Every score has a dated snapshot.

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  3. Claude Fable 5 vs Mistral: Mistral Medium 3

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Claude Fable 5 vs Mistral: Mistral Medium 3 benchmark

In this head-to-head showdown, Mistral: Mistral Medium 3 is more budget-friendly at $2/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose Claude Fable 5 if your priority is peak reasoning, complex code generation, and top preference Elo. Choose Mistral: Mistral Medium 3 if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Anthropic
Claude Fable 5

Anthropic top-tier X-High reasoning model engineered for heavy multi-step tasks. Official API $10/$50 per 1M tokens (Claude Platform pricing, Aug 2026).

Fable 5 (X-High Reasoning)Elo 1,616$50/1M out
Mistral
Mistral: Mistral Medium 3

Auto-discovered from OpenRouter (mistralai/mistral-medium-3). Preview until a second source matches.

$2/1M out

Claude 5 Series Family & Variants (3)

Speed, cost, and intelligence tradeoffs across the Anthropic lineup

vs Base Model
Claude Opus 5
Anthropic
Base Model
ReasoningFast Route
Elo1624
Speed72 t/s
In /1M$10
Out /1M$50
View specs →vs this
Claude Fable 5
Anthropic
Fable 5 (X-High Reasoning)
Reasoning
Elo1616
Speed58 t/s
In /1M$10
Out /1M$50
-8 Elo0% price0.8x speed
Selected
Claude Sonnet 5
Anthropic
Sonnet 5
Elo1556
Speed118 t/s
In /1M$2
Out /1M$10
-68 Elo-80% price1.6x speed
View specs →vs this

Claude Fable 5 Thinking Depth & Cost Scaler

Simulate accuracy gains vs added response time & token cost

Mode: Medium (16k budget)

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
340 ms
Standard speed
Reasoning Depth
~3,200
Internal tokens
Cost / 1k Calls
$180.00
9.0× standard bill
Accuracy Boost
+5.2% accuracy
STEM & SWE-bench
Top Rival Showdowns for Claude Fable 5
All Matchups
Compare vs:vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar Leader

Mistral: Mistral Medium 3

$2 / 1M output

Capability Percentiles

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

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 AdvantageClaude Fable 5 5/6
Head-to-Head Comparison

Overall Matchup Breakdown

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

Claude Fable 5 (8)vsMistral: Mistral Medium 3 (2)
Claude Fable 5: 8W (80%)Overall: Claude Fable 5Mistral: Mistral Medium 3: 2W (20%)
← Claude Fable 5Mistral: Mistral Medium 3 →
Claude Fable 5 (5/5)

Intelligence & Reasoning

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

Preference Elo
1,616vs—
Coding Elo
1,622vs—
SWE-bench
80%vs—
LiveBench
75.2%vs—
GPQA Diamond
87.6%vs—
Claude Fable 5: 5WMistral: Mistral Medium 3: 0W
Claude Fable 5 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
58 tok/svs—
Time to first token
340 msvs—
Claude Fable 5: 2WMistral: Mistral Medium 3: 0W
Mistral: Mistral Medium 3 (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$50/1Mvs$2/1M
Input price
$10/1Mvs$0.4/1M
Context window
1Mvs131k
Claude Fable 5: 1WMistral: Mistral Medium 3: 2W

Side-by-Side Benchmark Matrix

Preference Elo
Claude Fable 51,616
lmarena · Aug 16, 2026
Mistral: Mistral Medium 3—
Coding Elo
Claude Fable 51,622
lmarena · Aug 16, 2026
Mistral: Mistral Medium 3—
LiveBench
Claude Fable 575.2%
livebench · Aug 16, 2026
Mistral: Mistral Medium 3—
SWE-bench
Claude Fable 580%
swebench · Aug 16, 2026
Mistral: Mistral Medium 3—
GPQA Diamond
Claude Fable 587.6%
seed-bootstrap · Aug 16, 2026
Mistral: Mistral Medium 3—
Time to first token
Claude Fable 5340 ms
seed-bootstrap · Aug 16, 2026
Mistral: Mistral Medium 3—
Output speed
Claude Fable 558 tok/s
seed-bootstrap · Aug 16, 2026
Mistral: Mistral Medium 3—
Input priceMistral: Mistral Medium 3 (+$9.6/1M)
Claude Fable 5$10/1M
openrouter · Aug 17, 2026
Mistral: Mistral Medium 3$0.4/1M
openrouter · Aug 17, 2026
Output priceMistral: Mistral Medium 3 (+$48/1M)
Claude Fable 5$50/1M
openrouter · Aug 17, 2026
Mistral: Mistral Medium 3$2/1M
openrouter · Aug 17, 2026
Context windowClaude Fable 5 (+869k)
Claude Fable 51M
openrouter · Aug 17, 2026
Mistral: Mistral Medium 3131k
openrouter · Aug 17, 2026
BenchmarkClaude Fable 5Mistral: Mistral Medium 3Advantage Delta
Preference Elo
1,616
lmarena · Aug 16, 2026
——
Coding Elo
1,622
lmarena · Aug 16, 2026
——
LiveBench
75.2%
livebench · Aug 16, 2026
——
SWE-bench
80%
swebench · Aug 16, 2026
——
GPQA Diamond
87.6%
seed-bootstrap · Aug 16, 2026
——
Time to first token
340 ms
seed-bootstrap · Aug 16, 2026
——
Output speed
58 tok/s
seed-bootstrap · Aug 16, 2026
——
Input price
$10/1M
openrouter · Aug 17, 2026
$0.4/1M
openrouter · Aug 17, 2026
Mistral: Mistral Medium 3 (+$9.6/1M)
Output price
$50/1M
openrouter · Aug 17, 2026
$2/1M
openrouter · Aug 17, 2026
Mistral: Mistral Medium 3 (+$48/1M)
Context window
1M
openrouter · Aug 17, 2026
131k
openrouter · Aug 17, 2026
Claude Fable 5 (+869k)
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 96% with Mistral: Mistral Medium 3
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: $350Out: $750
Mistral: Mistral Medium 3$44.00 / mo
In: $14Out: $30
Estimated Cost Delta

Mistral: Mistral Medium 3 is estimated to save $1,056.00/month ($12,672/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Mistral: Mistral Medium 3:Pick Mistral: Mistral Medium 3 when you are optimizing output cost.
  • 2
    Claude Fable 5:Pick Claude Fable 5 for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatMistral: Mistral Medium 3

Lower output list price ($2/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGClaude Fable 5

Larger window (1M).

Screenshots / visionClaude Fable 5

Claude Fable 5 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatMistral: Mistral Medium 3Lower output list price ($2/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGClaude Fable 5Larger window (1M).
Screenshots / visionClaude Fable 5Claude Fable 5 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
launchJun 15, 2026

Claude Fable 5: the $10/$50 X-High Reasoning Anthropic SKU

Fable 5 is Anthropic's top-tier X-High reasoning tier. Read SWE-bench and output price together.

Community Sentiment

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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
Mistral

Mistral: Mistral Medium 3

Elo n/a
LiveBench—
SWE-bench—
Speed—
Output cost$2/1M

Frequently Asked Questions

Which is better overall, Claude Fable 5 or Mistral: Mistral Medium 3?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Claude Fable 5 or Mistral: Mistral Medium 3?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
Mistral: Mistral Medium 3 output tokens are $2/1M versus $50/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Fable 5 or Mistral: Mistral Medium 3?
We do not have TTFT for both models.
Which has the larger context window?
Claude Fable 5 accepts 1M tokens versus 131k.
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 Mistral: Mistral Medium 3 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 X-High Reasoning Anthropic SKU

Similar Head-to-Head Comparisons

All Claude Fable 5 matchups →|All Mistral: Mistral Medium 3 matchups →
Claude Opus 5 vs Claude Fable 5Claude Opus 4.8 vs Claude Fable 5Claude Opus 4.6 vs Claude Fable 5Claude Opus 4.5 vs Claude Fable 5Claude Sonnet 5 vs Claude Fable 5Claude Sonnet 4.5 vs Claude Fable 5