Claude Sonnet 4.6
AnthropicProprietaryReleased Feb 17, 2026
Claude Sonnet 4.6 has no arena.ai Agents result yet, so on our leaderboard it is listed after models that do. Claude Sonnet 4.6 ranks #45 on the LMArena Text leaderboard (style control) with an Arena score of 1472.0 (±3.5, 70,931 votes). Artificial Analysis Intelligence Index: 24.7. API price: $3.00 input / $15.00 output per 1M tokens. Context: 1M. Nearest rivals: Gemini 3 Flash (1472.8) above and Claude Opus 4.5 (1469.7) below.
Quick answer
- Agents leaderboard
- No result yet
- Text (LMArena)
- #45 · 1472.0
- 17NAS overall
- #55 of 86
- API price (in / out)
- $3.00 / $15.00 per 1M tokens
- Closest rival
- Gemini 3 Flash · 1472.8
- Cheaper alternative
- Gemini 3.6 Flash: Text 1483.0, output $3.75 (75% cheaper)
- Data updated
- Oct 22, 2026 · synced daily
Sources: arena.ai, LMArena, Artificial Analysis, OpenRouter
Key metrics
Reasoning effort comparison
Artificial Analysis measurements per reasoning effort of the same model| Effort | Intelligence | Coding | tok/s | TTFT (s) | First answer (s) |
|---|---|---|---|---|---|
| max | 30.1 | 63.0 | – | – | – |
| non-reasoningUsed in table | 24.7 | – | – | – | – |
Models ranked nearby
Sorted by Arena score| # | Model | Arena | Intel. | Output $ | tok/s |
|---|---|---|---|---|---|
| 33 |  GLM-5.3 Flash | 1474.9 | 41.8 | $0.50 | 75 |
| 34 |  Qwen3.7 Max | 1474.0 | 29.5 | $7.50 | – |
| 35 |  Gemini 3 Flash | 1472.8 | 17.9 | $3.00 | – |
| 36 | Claude Sonnet 4.6This page | 1472.0 | 24.7 | $15.00 | – |
| 37 | Claude Opus 4.5 | 1469.7 | 23.7 | $25.00 | – |
| 38 |  GPT-5.6 Terra | 1467.1 | 42.1 | $12.00 | 142 |
| 39 |  MiMo V2.5 Pro | 1466.4 | 26.0 | $0.87 | – |
More from Anthropic
| # | Model | Arena | Intel. | Output $ | tok/s |
|---|---|---|---|---|---|
| 3 | Claude Opus 5.5 | 1508.8 | 57.6 | $20.00 | 98 |
| 4 | Claude Fable 5 | 1503.7 | 49.6 | $50.00 | – |
| 5 | Claude Opus 4.6 | 1502.6 | 31.9 | $25.00 | – |
| 6 | Claude Fable 5.1 | 1502.6 | 53.4 | $50.00 | 71 |
| 7 | Claude Opus 4.7 | 1501.0 | 40.7 | $25.00 | – |
| 11 | Claude Opus 5 | 1491.1 | 50.8 | $25.00 | – |
Pricing
- Official API list price: $3.00 input and $15.00 output per 1M tokens (USD).
- At a typical 3:1 input-to-output ratio, the blended cost is about $6.00 per 1M tokens.
- Among 81 models with an output price, it is the #66 cheapest.
- The cheapest OpenRouter route charges $3.00 input / $15.00 output.
Sources & methodology
Claude Sonnet 4.6 has no arena.ai Agents result yet, so on our leaderboard it is listed after models that do.
- arena.ai Agents — agent task success rate, 95% interval, sessions and rank (via the public Hugging Face dataset, CC BY 4.0).
- LMArena — Arena score (Text leaderboard with style control, the same view arena.ai shows by default), 95% confidence interval, votes and rank.
- Artificial Analysis — Intelligence / Coding Index, output speed and latency (medians).
- OpenRouter — Route prices, context length and listing date.
Arena scores use the Bradley-Terry model (not Elo); ± is the half-width of the 95% confidence interval. Latency figures are Artificial Analysis medians; for reasoning models, time to first token and to first answer include the thinking phase. Data syncs daily at 14:20 (UTC+8).
Limits: Arena scores come from anonymous users voting on chats, so they reflect conversational preference rather than agent or coding benchmarks; with few votes the interval is wide and ranks move. Prices and speeds change as providers update them.
FAQ
What rank is Claude Sonnet 4.6 right now?
Claude Sonnet 4.6 is #36 on our leaderboard of 69 scored models (Arena score 1472.0); its raw LMArena rank is #45.
What does Claude Sonnet 4.6 cost via API?
Input $3.00 / output $15.00 per 1M tokens (official API list price; the OpenRouter quote when no official price is available). At a typical 3:1 input-to-output ratio, the blended cost is about $6.00 per 1M tokens.
How close is Claude Sonnet 4.6 to the models ranked next to it?
It is 0.8 points behind Gemini 3 Flash (1472.8) and 2.3 points ahead of Claude Opus 4.5 (1469.7); gaps smaller than the confidence interval (±3.5) are not significant.
Is Claude Sonnet 4.6 open source? Can it be self-hosted?
Claude Sonnet 4.6 is a closed model, available only via official APIs or hosted services.
What is the context length of Claude Sonnet 4.6?
1M (1,000,000 tokens, as listed on OpenRouter).
Claude Sonnet 4.6 vs Gemini 3 Flash: which is better?
On the LMArena Text leaderboard Claude Sonnet 4.6 scores 1472.0 and Gemini 3 Flash scores 1472.8 (a 0.8-point gap, within the confidence interval, so not significant). On price, Claude Sonnet 4.6 costs $15.00 and Gemini 3 Flash $3.00 per 1M output tokens.
Is there a cheaper model close to Claude Sonnet 4.6?
Yes: Gemini 3.6 Flash scores 1483.0 on the Text leaderboard (Claude Sonnet 4.6: 1472.0) and costs $3.75 per 1M output tokens, about 75% less than Claude Sonnet 4.6 ($15.00).
Where does the Claude Sonnet 4.6 data come from and how often is it updated?
Agent success rates come from the arena.ai Agents leaderboard (CC BY 4.0), Text scores from LMArena, intelligence and speed from Artificial Analysis, and prices and context from official list prices and OpenRouter. 17NAS syncs daily at 06:20 UTC; this page was last updated Oct 22, 2026.