$2.50 in / $15.00 out
- Context: 1.05M
- Providers: 30
- Tool calling
- Structured output
- Reasoning
- Vision
Best AI models · 2026-06-29
Best AI Models for Coding in 2026
Models with strong tool calling, structured output and large context windows.
How we picked these
- Tool calling support is required — coding agents cannot call shell or editor APIs without it.
- Context window must be ≥ 100K tokens to fit large source files and diffs.
- Bonus points for structured output (more reliable JSON for tool results) and reasoning support.
Top 10 picks
$5.00 in / $30.00 out
- Context: 1.05M
- Providers: 27
- Tool calling
- Structured output
- Reasoning
- Vision
$1.25 in / $10.00 out
- Context: 1.05M
- Providers: 28
- Tool calling
- Structured output
- Reasoning
- Vision
$0.300 in / $2.50 out
- Context: 1.05M
- Providers: 27
- Tool calling
- Structured output
- Reasoning
- Vision
$0.500 in / $3.00 out
- Context: 1.05M
- Providers: 21
- Tool calling
- Structured output
- Reasoning
- Vision
$2.00 in / $12.00 out
- Context: 1.05M
- Providers: 19
- Tool calling
- Structured output
- Reasoning
- Vision
$0.100 in / $0.400 out
- Context: 1.05M
- Providers: 17
- Tool calling
- Structured output
- Reasoning
- Vision
$1.50 in / $9.00 out
- Context: 1.05M
- Providers: 15
- Tool calling
- Structured output
- Reasoning
- Vision
$0.435 in / $0.870 out
- Context: 1M
- Providers: 39
- Tool calling
- Structured output
- Reasoning
- Open weights
$1.40 in / $4.40 out
- Context: 1M
- Providers: 36
- Tool calling
- Structured output
- Reasoning
- Open weights
Recommended stack by tier
Same shortlist sliced four ways — pick the tier that matches your budget and constraints.
Budget
Google$0.100 in / $0.400 out · 1.05M ctx
Lowest total per-1M-token cost in this list ($0.50).
Lowest-cost option that still meets the use case. Pick this when you have high volume or strict unit-economics.
Balanced
Google$1.50 in / $9.00 out · 1.05M ctx
Median price ($10.50) — typically the safest default.
Good-enough quality at a mid-tier price. The default choice for most production apps.
Premium
OpenAI$5.00 in / $30.00 out · 1.05M ctx
Highest-priced pick in the list ($35.00) — usually the flagship.
Highest-capability model in this list. Pick when accuracy or reasoning matters more than cost.
Open-weight
DeepSeek$0.435 in / $0.870 out · 1M ctx
Open weights and the cheapest in that subset ($1.30).
Open weights — self-host on your own GPUs, fine-tune on private data, run offline. Pricing here reflects the cheapest API host.
Frequently asked questions
Which AI model is the best for code generation in 2026?
Right now we put GPT-5.4 from OpenAI at the top, primarily because it combines tool calling, structured output and a context window large enough to fit real source files. Rankings are recomputed from live model metadata — see "How we picked these" above for the exact rule.
What is the cheapest option in this list?
Gemini 2.5 Flash-Lite (Google) is the lowest-priced pick at $0.100 per 1M input tokens and $0.400 per 1M output tokens. Costs from other entries scale up from there.
How are these rankings generated?
Each pick comes from a programmatic rule defined in our use-case-rules config: a hard filter (e.g. tool calling required, context ≥ 100K) plus a numeric score combining capability, context window and price. We never hand-curate the order, but we do hand-curate the rule. Underlying model metadata is refreshed daily from a normalised canonical catalogue.
How often is this page updated?
The underlying model data is refreshed once per day, and the static page is rebuilt when the data changes. The 'Last updated' date below shows the most recent rebuild.
Why is tool calling a hard requirement?
Coding and agent workflows almost always need to invoke external tools — the editor, a shell, a test runner, a database. Without first-class function calling, you have to parse free-form text the model emits, which is fragile in production.
Explore more
Top picks · model details
- GPT-5.4$2.50 in / $15.00 out
- GPT-5.5$5.00 in / $30.00 out
- Gemini 2.5 Pro$1.25 in / $10.00 out
- Gemini 2.5 Flash$0.30 in / $2.50 out
- Gemini 3 Flash Preview$0.50 in / $3.00 out
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Last updated:
Prices in USD per 1M tokens. Unknown means the provider does not publish per-token pricing.
Pricing and capabilities are refreshed daily and reconciled against each provider's official documentation. Always verify critical production decisions with the provider directly.